TPMK BSB play

Tough spot, big raise, I folded, what do you think? 55 left 30 pay 30+3 if that matters.

Party Poker No-Limit Hold'em Tourney, Big Blind is t200 (9 handed) FTR converter on zerodivide.cx

UTG+1 (t8701)
MP1 (t1445)
MP2 (t2365)
MP3 (t4227)
CO (t2580)
Button (t7040)
Hero (t7180)
BB (t4355)
UTG (t5353)

Preflop: Hero is SB with A[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/club.gif[/img].
<font color="#666666">6 folds</font>, Button calls t200, Hero completes, BB checks.

Flop: (t600) A[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets t400</font>, BB calls t400, <font color="#CC3333">Button raises to t1800</font>, Hero folds ...