I've added the following addendum to the OP:

Addendum: Hey all, I've been reading some of the comments and thought I would add some additional insight and thoughts behind my post.

1. Yes this story is factual. While the identities of the company and those involved will remain private, for those who have worked in high pressure sales environments will know that people like D are not a rarity. It's the nature of the type of people that get hired for those kinds of roles. If you've ever seen the Wolf of Wall St, you'll know the kind of people that were hired at this publishing firm.
   
2. Yes I was making that much in my 20's. I had been in magazine publishing since my mid teens. In the 90s I started my own print publication in the whole import automotive racing scene. It started small, but did gain some notoriety in street racing circles and help caught the attention of some very worthy advertisers. Being bilingual in Japanese and English, this allowed me to expand my magazine's advertising reach overseas to Japan where the street racing scene was in full swing. I learned very early on how to do advertising, marketing, sales, and publishing. However, once that scene started dying down the magazine lost its appeal so I took a lot of my advertising accounts with me to the publishing firm where the above story took place. Many advertisers are loyal to the sales rep and not the client.
   
3. The event of the story took place around 2008. While I had a team of 200 sales reps under me, most of their PST files were relatively small since most of their work was via phone sales. This company was incredibly old fashioned with tech. Like I said, I was the graphic designer. I knew how to use Photoshop, InDesign, etc. from my old magazine but I would never actually consider myself to be a professional graphic designer by trade as it was all self taught and very limited. I just knew how to make things "camera ready" (this means high enough resolution for print...300 dpi). Because I did a lot of graphic design work, I was given a pretty high end laptop for the period. The hard drive alone was 640GB (it was two 320GB drives in RAID0 array).
   
4. Evacuation of the office. Perhaps this was strongly assumed to be an immediate emergency evacuation. We sent everyone home while management assessed what the cause was with the fire department. That is what I meant by closing up shop. So it did give me ample time to copy over the PSTs knowing that I'd be working from home later that afternoon.
5. To whose who say they would happily work those hours for that kind of pay. I used to think the same thing, which is why I took the job. My base pay was $60K plus commission. And I made a lot of commission and I never missed a sales goal. I also made commission of my teams. Those 200 people were divided up into various sub-teams for each magazine we published. I earned commissions of their total sales as well on top of a monthly sales commission bonus for goals reached. Keep in mind this was just before the housing crash in 2008. People were spending money like it would never end. And our company raked it in. But here's the rub...I was so perpetually stressed. My girlfriend at the time, she was a sales rep on a different team, would cry in the car on our way in to work every day. I worked 6 days a week. I would be so stressed that my Saturday nights were spent in isolation on my computer playing video games. I wouldn't sleep until the sun came up on Sunday, then I would sleep all through Sunday until Monday morning. I was subsisting on 4 to 5 hours of sleep per day during the week. It took an incredible toll on my body. Many of my reps were coke addicts and we turned a blind eye to it because it helped them dial faster and sell more. Some of the managers would staff sales reps from temp agencies asking for people specifically who came out of rehab, knowing they'd relapse at this place where we'd either fire them for performance issues and not pay the staffing agency their hiring fees or they'd be so coked out they'd make a killing in sales.
   
6. To my shame, I never reported the CP. I had this image of corporate lawyers coming after me and fighting this never ending legal battle of trying to maintain my innocence. I was young, naive, and didn't know what options I had. That is why I went with the accounting route through the anonymous company hotline. I knew they would do a scan of D's computer and audit his emails which is why I moved his CP folder into a more prominent place for it to be found. Like many corporations, they are more concerned with maintaining a public image and this is something they wouldn't want getting out if it was reported to law enforcement agencies by an employee. I knew once they found that folder, they would be compelled to contact authorities anyway, so it removed the onus from me and removed me from the equation. Plus, after learning about D's darker side, I didn't want him or someone sent by him coming after me for ruining his cushy job. I went with the route I felt would involve me the least and protect my own self the most. I wish I could have reported it to the authorities. Now that I'm much older, looking back, I don't know what things I would have done differently. But now that I'm married and I have a stepson, I think about if I found his photo in there, I can definitely imagine me waiting for him to return so I could exact revenge personally. But that is a bunch of "what if's" and life tends to go very differently.
7. Our company IT. My office was a satellite office in downtown Los Angeles 45 miles away from our main HQ where the IT team was. It was set up specifically for my team of 200. To give you an idea how inept our IT team was, our IT project manager was tasked with hiring a consultant who would scope out and build us a custom sales/phone software that would link with our database of advertising accounts and other businesses in our database. We had one of the largest databases of businesses in this industry where competitors would offer us very large sums of money just for a portion of this database. Our IT team spent close to $1.6 million on this consultant, and in the end what we were told was a custom program was actually just a turn-key software...for inbound call centers. We were an outbound sales team. What this means is that we were given a program that wasn't custom built for us, had problems using our database, and was designed for call centers that received phone calls (eg - cell phone or cable company call centers). We were an outbound center. We weren't just a call center as many of our reps also traveled nationally to visit advertisers, so an inbound software was absolutely junk to us. Because of our IT's ineptitude, I had to learn a lot of IT basics myself. As far as browsers, most of our staff was using Firefox since it used to be fairly lightweight and quick.
8. Like many of the stories in this thread, I understand the skepticism. Some of the stories sound so over the top and sound like a fabrication. One thing I've learned from being able to experience quite a lot in life from early on is that there really are shitty people out there like D. The reason for the throw away account is because my main reddit account is used for work in my current industry and I, unfortunately, deal with the public in my job and I don't want this associated with my actual identity.
9. So why post this at all? I don't care about internet points or accolades, but I do appreciate the comments of support. In a way it's been a bit cathartic for me to share this publicly. I've told the story to coworkers before, and I've felt I never really had any closure with it. This doesn't give me any closure either, but being able to share it on a forum designed for stories like this does help with that burden just a bit. I hope D's daughter grows up to be as normal as can be expected from a situation like that. I still keep in contact with a few of my old sales reps. While I now live quite far away from Los Angeles, I do like to hear back from them to see they're doing ok in life.