Blinds 2000/1000/100.
Thanks for all the feedback. Wasn"t really expecting so much. I make it 6 saying Call and 3 Fold, so I"m still not sure what the best play was. I think maybe wait, try to outplay the others to the cash and then go to war with him.
Anyway, I snap-called, he showed A7, hit a 7 and left me with 1k. I actually finished 5th because next hand he shoved again with A6, was called by AJ and hit a 6. Shortly after he knocked out 99 with 38. It was crazy because he had a huge pile of chips poured all over his part of the table as he wasn"t capable of stacking them. Of course he won the tournament. He was miles in front starting heads-up but then maniac 2 started going all-in blind, won a couple of hands but didn"t last long.