AKo last two tables SH $6k event

[iremmats]

Two tables left of the Carribean Poker Classic. $6300 event with 170ppl.

8 players left, 2 tables, average about 320k, blinds 4/8k with 800 ante.

Background: UTG is a decent russian player. Not seen on EPTs and stuff though. Chipleader at the table but has been ran over 4-5 last pots by us. We also lost a QQ vs AA against him earlier exactly the same way this hand is played out. We think we have some edge against UTG when it comes to playing flops etc.

Stacks 360k
UTG makes it 32k to go.
Hero in SB makes it 100k
UTG almost instapushes.

Fold/call and why?

About 23k if we lose now. 240k to #1 finisher.