[craze9]

You didn't have a huge hand. You had one pair, and no spade on an all spade flop. That's actually a pretty weak postflop hand.

Given your read of "this guy is crazy, so I'm going to show down this hand," I think betting 400 on the flop was very bad.

You are out of position, with a medium hand, against an unpredictable player--why are you building a huge pot? If he flopped the nut flush, he has you ruined, because he knows your hand needs to catch two perfect cards to beat him, and can therefore slowplay. Based on your comments, it seems that if he had had AsXs, he would have stacked you for 750bbs. He might have stacked you with any hand that beat AA.

The way I see it, your primary concern should be to keep the pot small. I bet the flop and hope he folds. I check the turn. If he makes a large bet on the turn, I probably fold, because I know Im not calling an allin on the river. This hand is too bad for me to go broke with.