Hey guys, sorry I cannot convert my hand : having trouble with my PT4.  Anyhow, I was playing a 54$ MTT on Party which paid the top 6 players ; here is the payout (approximately) :

1- 750

2- 585

3- 415

4- 325

5- 185

6- 155

So it is a top heavy payout, but to bust the bubble is also quite important.

The button is on seat 8 ; antes are 0.1bb

Seat 1 (23bb)

Seat 2 (13bb)

Seat 3 (8bb)

Seat 4 (19bb)

Seat 5 (17bb)

Hero   (20bb)

Seat 7 (6bb)

Seat 8 (10bb)

So I am second in chips when I wake up with AKo in MP and make it 2bb.  It is folded to the button who shoves for 10bb.  At this point, I am always happily calling his shove, but then the SB (the chip leader) shoves for 23bb.  What to do?  He has me covered, but if I win, I am a massif chip leader, if I lose to the chip leader, I bust out when there is already 2 short stacks. 

I ended up tanking for a while before folding.  My reasoning was, regardless of who wins, I would be second in chips and there would be either 7 players left, or 8 with 2 small stacks.  The problem is, I thought the chip leader's range was capped at AQ-AK or 88-JJ (I think he would of flatted QQ+), and therefore making it a very borderline spot.

What would you do in this marginal situation?  We are almost always racing here and is it worth it, given the ICM implications?