Of course, Jack may also be motivated by his pathological desire for a meaningful death.

I think you just nailed it on the head. I think that and the fact that he's now doubting and wondering if he just sacrificed his own life and Tony's to save Carl is what made him sit tight and let Larry come to him. The evidence has to be solid if they're going to move against Starkwood and save Tony, but rarely does Jack actually recognize that/reach out for help. Mayer really got to him because he's now putting full trust in the system and Larry to fix this and get Tony back.

Or you know, it could be he's kicking himself for not being able to shoot down a helicopter with a handgun. I mean, come on, Jack. You've done this before. Getting a little rusty, are we? Heehee.

Also- yes to the Hodges thing. And YES to the tattoos but no scars thing. SIGH.