I'm not really surprised he was faking the "nice" persona to be honest. Didn't anyone notice he tried too hard to be a "nice" guy and people's "psychologist" as he claimed? There's being genuinely nice, and there's trying so hard it completely loses any genuinity and just looks suspicious. Didn't suspect it'd escalate THIS far though, this person sounds like they need psychological help because this is very abnormal behaviour.
EDIT: Also would like to add that genuinely nice people that go out to help others normally don't show-off by saying they're people's "psychologists" and the like, most of the time you don't notice them. Just something to keep in mind when noticing this behaviour in other people. Even in the hacker thread he was trying too hard to garner sympathy for himself. Seriously? He claims he was hospitalized over his 'guilt'? All his posts in that thread were filled with obviously fake melodrama.