90 man donkament - ATo river decision

[Sk00l4m3nts]

Started with 90, down to 45... 18 places pay. Villain is unknown.

Full Tilt Poker
No Limit Holdem Tournament
Blinds: t60/t120
8 players
Converter

Stack sizes:
UTG: t8090
UTG+1: t2390
MP1: t5885
MP2: t1445
School: t8510
Button: t11255
SB: t2180
BB: t5905

Pre-flop: (8 players) School is CO with T[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/heart.gif[/img]
UTG calls t120 <font color="aaaaaa">(pot was t180)</font>, 3 folds, <font color="#cc0000">School raises to t480</font>, 3 folds, UTG calls t360 <font color="aaaaaa">(pot was t780)</font>.

Flop: 8[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/spade.gif[/img] (t1140, 2 players)
UTG checks, <font color="#cc0000">School bets t480</font>, <font color="#cc0000">UTG raises to t960</font>, School calls t480 <font color="aaaaaa">(pot was t2580)</font>.

Turn: 2[img]/images/graemlins/spade.gif[/img] (t3060, 2 players)
UTG checks, School checks.

River: 9[img]/images/graemlins/heart.gif[/img] (t3060, 2 players)
<font color="#cc0000">UTG bets t1080</font>, School...