Potripper actually knew the hole cards - an observer who had a hack in the system could see all the player hole cards. You can read more about it on cardplayer dot com. I read that they reimbursed all players known to be affected by the cheaters though - i.e., everyone was bumped up a spot in this tourney.
The calls and all-in at that point made me think that crazymarcc was in on a deal. I can see an all-in post flop by why make the move after calling a post flop bet and missing the turn?