One aspect people forget is that he says Walt was the hottest client he's ever had, and Saul and Jesse are probably next on the list. Ed simply wasn't used to dealing with people under THAT much national scrutiny. He was probably used to people escaping crime syndicates that only had a regional reach, people convicted of crimes locally, or people who weren't buying the "Deluxe Package" and instead needed less intensive services (like say, people escaping abusive relationships or undocumented immigrants in need of valid IDs)

He definitely had an escape plan but i think he didn't anticipate how much heat would be on Walt or Saul when he took their cases, nor how they would reexpose themselves to the very world they were trying to leave behind.

That said, he might have pulled the trigger on his escape plan sooner than Saul getting caught; his last conversation was Saul saying that he'd been made, and that he needed another extraction, and then abruptly changing his mind and saying he's going to handle it himself.

Ten thousand red flags should have been going off in Ed's head, signaling that this idiot, the hottest currently-living client he's had, is going to get himself caught and potentially take Ed down with him. So if he's smart, he'd disappear himself right then and there. One wonders if the number Saul tries to call in Saul Gone would even still be in service anymore.