[locutus2002]

I'd fold.

Hero is not going to have much FE after open pushing the last 5 times he's been in a pot. The players have had all night to think about how you will push all pairs, AT,KQ and other hands with your short stack. They have also had time to build their courage.

3 or 4 players are in fairly bad shape and will be willing to call with looser holdings than normal especially given the flat payout structure.

My action is going to be largely determined by BB who is getting 1.4:1 to call.

I think the M is deceptive here; 10.5XBB is a stack capable of crippling someone, and a single double up can put you back in the running for the tournament. I'd probably tighten my standards a notch and fold, unless I expected BB to fold.