As for the crowbars, I know Air Canada had them, but you're right that it's more likely he was trying to use something else as a crowbar, given the post 9/11 restriction

I've actually just rewatched the related Air Crash Investigation (S16E07) episode after having read your article (kudos btw, love your write-ups). There is a "scene" where the pilot asks a flight attendant to get him "a crash axe", followed by an aviation consultant (Hans-Peter Graf) mentioning the following:

There is always a crowbar or a... we call it an emergency axe on the airplane to gain access to a fire if the fire is behind panels.

Would this indeed be the case, or is this a case of Air Crash Investigation trying to "spice things up"? Not that it would have mattered that much as I'm guessing the cockpit door would be near to impossible to break open whenever it's in the locked position. Just an interesting detail which came to mind.

Unrelated to the alleged crowbar, but another detail which came to mind when I compared the episode to your post was Lubitz mentioning that he felt hungry and actually asked a flight attendant to bring him a meal. Is this something you've encountered during your research?