Frozen hand

[NotReady]

This is a hand from one of Frozen_Fish's $215 SnG's. I've replayed them all and there are many, many questions about the play, but I chose this one because it goes to the fundamental approach of a player. It appears Frozen has a virtual lock on 3rd and he risks it all here against a big stack which tells me he has no interest in 3rd but is always looking to win. I can't see any other reason for making this play.

Am I reading this right or should this be a standard move in this situation?

Party Poker No-Limit Hold'em Tourney, Big Blind is t200 (4 handed)

Hero (t1330)
UTG (t3965)
Button (t430)
SB (t4275)

Preflop: Hero is BB with A[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/club.gif[/img].
UTG folds, Button folds, SB completes, Hero raises to t1330 (All-In), SB calls t1130.

Flop: (t2660) 9[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/spade.gif[/img] <font color="blue">(2 players, 1 all-in)</font>

Turn: (t2660) 4[img]/images/graemlins/club.gif[/img] <font color="blue">(2 players, 1 all-in)</font>

River: (t2660) 3[img]/images/graemlins/diamond.gif[/img] <font color="blue">(2 players, 1 all-in)</font>

Final Pot: t2660

Results: <font color="white"> SB had Kh6h. </font>

FWIW: Twodimes gives AQ 3:2 here.