PP $22: AKs overcall on the bubble?

[Longy]

UTG is a multitabling regular but from my observations doesn't understand or is unaware of icm. The button has shown no signs of doing anything but whittle his stack away on the bubble.

Call or fold?

Party Poker
No Limit Holdem Tournament
Blinds: t300/t600
4 players
Converter

Stack sizes:
UTG: t7000
Button: t590
SB: t4100
Hero: t8310

Pre-flop: (4 players) Hero is BB with A[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/spade.gif[/img]
<font color="#cc0000">UTG raises all-in t7000</font>, <font color="#cc0000">Button calls all-in t590</font>, SB folds, Hero ????????