"There is always an end to human endurance,"Especially when your lifestyle has been one of a pampered life of debauchery. IF this ugly, hairy beast IS cracking, it's only because the Peter Principle is alive and well.
As a wise FReeper said the other day, he'll crack, he's in management.
I think it says alot about the kind of "terrorist" K is simply by the fact that he allowed himself to get captured, rather than commit suicide. He doesn't mind offing others, but I'm guessing he's quite a wimp when it comes to his own life.