PokerStars freeroll - big draw on flop early on

[McDirk]

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero (t1500)
UTG (t1830)
UTG+1 (t3020)
MP1 (t1390)
MP2 (t1440)
MP3 (t2600)
CO (t2230)
Button (t1510)
SB (t920)

Preflop: Hero is BB with 6[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/heart.gif[/img].
UTG calls t20, <font color="#666666">1 fold</font>, MP1 calls t20, <font color="#666666">1 fold</font>, MP3 calls t20, <font color="#666666">2 folds</font>, SB completes, Hero checks.

Flop: (t100) 9[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, <font color="#CC3333">Hero bets t80</font>, UTG calls t80, MP1 folds, <font color="#CC3333">MP3 raises to t260</font>, <font color="#CC3333">SB raises to t900</font>, Hero?