CB this flop?

[jenson]

UTG 29.53% / 6.41% / 1.19
MP3 49.46% / 10.75% / 2.80

I normally don't CB with two pre-flop callers and an Ace on the board. Now I'm starting to think that I played this weak tight.

His donk bets were giving me odds to stick around. I figured someone was slow playing.

How would you play this?

Ultimate Bet No-Limit Hold'em, $.25 BB (10 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

UTG+2 ($16.85)
MP1 ($77.75)
MP2 ($23.90)
<font color="#C00000">MP3 ($23.75)</font>
CO ($8.60)
<font color="#C00000">Hero ($18.55)</font>
SB ($45.50)
BB ($12.60)
<font color="#C00000">UTG ($5)</font>
UTG+1 ($5.95)

Preflop: Hero is Button with Q[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/heart.gif[/img].
<font color="#CC3333">UTG raises to $0.5</font>, <font color="#666666">4 folds</font>, MP3 calls $0.50, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $2</font>, <font color="#666666">2 folds</font>, UTG calls $1.50, MP3 calls $1.50.

Flop: ($6.35) A[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, <font color="#CC3333">MP3 bets $0.25</font>, Hero calls $0.25, UTG calls $0.25.

Turn: ($7.10) K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, <font color="#CC3333">MP3 bets $0.25</font>, Hero calls $0.25, UTG calls $0.25.

River: ($7.85) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, <font color="#CC3333">MP3 bets $0.25</font>, Hero calls $0.25, UTG calls $0.25.

Final Pot: $8.60