Any way I can lay this down?

[msb]

MTT in the first round... I've got about 5k, blinds are 100-200 (don't ask).

I'm in MP3 and get A [img]/images/graemlins/club.gif[/img] 2 [img]/images/graemlins/club.gif[/img]

MP2 limps, I call, SB completes and BB checks (4 to see the flop)

Flop: Q [img]/images/graemlins/diamond.gif[/img] 7 [img]/images/graemlins/club.gif[/img] 9 [img]/images/graemlins/club.gif[/img]

SB checks, BB checks, MP2 bets 500, I call, SB folds, BB folds.

Turn: 4 [img]/images/graemlins/club.gif[/img]

MP2 checks, I bet 800, MP2 calls.

River: Q [img]/images/graemlins/club.gif[/img]

MP2 goes all-in for 3400.

Is there any way I don't call this bet?