$55 5handed: I min raise utg=77. Other midstack pushes utg+1. Call?

[AA suited]

Party Poker No-Limit Hold'em Tourney, Big Blind is t300 (5 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

BB (t1285)
<font color="#C00000">HERO (t2645)</font>
<font color="#C00000">UTG+1 (t2115)</font>
MP (t2785)
Button (t1170)

Preflop: HERO is UTG with 7[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">HERO raises to t600</font>, utg+1 pushes, rest fold, HERO? [img]/images/graemlins/confused.gif[/img]

There's no Sb.

No reads.

My table image is questionable. I've stolen utg+1's blinds twice in the last 4 orbits. Plus when I was a shortstack (6handed), I pushed with co=98o and sucked out.

But then again, they're probably smart enough to know that there's a good chance one of the short stacks will be calling so they should think i gota have a decent hand.

Reason I min-raise was to bait one of the small stacks to go all-in. I never expected utg+1 to push.

I'll only dominate if he has 22-66. It'll be a coin flip or I'll be dominated on all other reasonable situations.

Assuming he has AK, would you call and go for the coin flip in this situation? Why/Why not?

THX