I sort of noticed that as well, but I keep hoping he's not completely insane. He just insists on proving that he is. It's like he hates religious people and wants to make them all look insane.
Except he does not rant about religious stuff nearly as much as our other fundies. Of all the fundies we regularly encounter in these forums I am convinced that Psycho is the most genuinely mentally disturbed. Lots of anger, a big chip on his shoulder, paranoia, a grandiose delusions. Most of the others are just religiously preoccupied which is not a (diagnosable) mental disorder.