Standard AQoff, or leak?

[AlcateL]

Party Poker No-Limit Hold'em Tourney, Big Blind is t15 (9 handed) converter

CO (t975)
Button (t975)
Hero (t985)
BB (t940)
UTG (t985)
UTG+1 (t955)
MP1 (t2070)
MP2 (t955)
MP3 (t1160)

Preflop: Hero is SB with Q[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/club.gif[/img].
UTG calls t15, <font color="#666666">5 folds</font>, Button calls t15, <font color="#CC3333">Hero raises to t82.5</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">UTG raises to t375</font>, Button folds, Hero folds.

Final Pot: t487.50

My thinking was if i didn't raise and a Q or an A hit the flop I could still be in big trouble.
Thoughts?