33 $: flopped two pair..exemplary hand for wrong slowplay

[Lahmshuffle]

Party Poker No-Limit Hold'em Tourney, Big Blind is t100 (8 handed) Hand History converter Courtesy of PokerZion.com

CO (t2050)
Hero (t2720)
SB (t2830)
BB (t4480)
UTG (t1110)
UTG+1 (t2150)
MP1 (t3120)
MP2 (t1540)

Preflop: Hero is Button with A[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">5 folds</font>, <font color="#CC3333">Hero raises to t270</font>, <font color="#666666">1 fold</font>, BB calls t170.

Flop: (t590) Q[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets t180</font>, BB calls t180.

Turn: (t950) J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets t800</font>, <font color="#CC3333">BB raises to t2400</font>.

Final Pot: t4150

the flop bet is awful isn't it? as played a fold seems pretty clear...?