Actually, Fastjack going out like he did makes perfect sense when you step back and consider that he is a man who is well aware of his own legend. Pride has made many a man do stupid things before, things you and they both know they should be better than. And if anyone on Jackpoint deserves to have pride in their accomplishments, their legend, then it is Fastjack. He mentioned it in the piece, actually, about not wanting to taint the legend of Fastjack by reaching out for help, admitting that he was at war with his own mind. Even if it wasn't some kind of entity moving into his head, and just regular mental illness, that's still a hard pill for people to swallow and admit to everyone they know. You see it in people with Alzheimers and dimensia. They put up the front as long as they can, because they don't want to admit it to others, or themselves, until finally someone has to stage an intervention. When you stop thinking of the legend of Fastjack, and start thinking of the human being, it makes perfect sense.