2-5 NL NYC Club

[reddave]

MP, full table, blinds 2-5 live $20 straddle. I have a fairly tight image.
People have been posting straddles like this all night, and often 4-6 see the flop. Folded to me (~400), I call with Q [img]/images/graemlins/spade.gif[/img]K [img]/images/graemlins/spade.gif[/img]. Button calls (~600), all else fold (3 handed).
Flop comes A [img]/images/graemlins/spade.gif[/img]J [img]/images/graemlins/heart.gif[/img]2 [img]/images/graemlins/spade.gif[/img].

Stradler checks, I bet $50. Button raises to $100, straddler folds.
So far the raiser has folded to reraises in similar situations (2 for 2). I'm pretty sure he doesn't have
AK or AQ.
What the best play here?
Thanks.