TPTK -- oop, river action? 50NL

[Kasane]

Full Tilt No-Limit Hold'em, $0.50 BB (6 handed) Full Tilt Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Button ($87.55)
Hero ($49.50)
BB ($57.10)
UTG ($13.45)
MP ($129.80)
CO ($83.55)

Preflop: Hero is SB with A[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
UTG calls $0.50, <font color="#666666">2 folds</font>, Button calls $0.50, <font color="#CC3333">Hero raises to $3.25</font>, <font color="#666666">1 fold</font>, UTG folds, Button calls $2.50.

Flop: ($7.25) A[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $5</font>, Button calls $5.

Turn: ($17.25) 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $12</font>, Button calls $12.

River: ($41.25) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>

Hero??

I didn't have that many hands on villain, but he seemed like one of those overpassive tags -- 20/10/1 types. They don't raise much, call too much, or call down with less than the nuts...

Uber dry flop, so there's no draw, and the Q really sucks, as it hits almost exactly what I put him on ... AQ/AJ or so. I have a psb left or so, so it's really, really hard to bet/fold. Yet check/call seems like it loses value. A push is getting snapped by everything I fear except Ax, which will probably lay down.