I think his type is pretty distinct INTP. Quite troubled, but that is what I see, breaking down each dichotomy.
I: you don't lock yourself in your apartment for hours at a time, on a daily basis, if you're an extravert.
N: people (in this thread, or another that is linked to) like to attribute his interview spiel to F, but I don't think that at all. That type of misanthropic cynicism is something I can relate to quite easily, and I am certainly not an F. An S in this position would say "where do I sign up?" instead of shitting on their feet like he did.
T: when did he ever show empathy for others, or a propensity for emotion superseding reasoning?
P: because an INTJ wouldn't read book after book after book, unless they were insane enough to believe they would regularly encounter a situation like the one with the blonde douchebag at the Harvard bar where he first met Skylar, instead of having no outlet for it 99.9% of the time. Obviously he has a propensity for simply learning things/theories, and doesn't have much desire at all to utilize them.