2-bets back to me - do I fold, call or cap this?

[Pov]

Table has been pretty weak so far. Both our villains seem like decent players, though - kind of semi-TAG.

Party Poker 1/2 Hold'em (10 handed) converter

Preflop: Hero is MP1 with A[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/spade.gif[/img].
UTG calls, UTG+1 calls, UTG+2 calls, Hero calls, <font color="#CC3333">MP2 raises</font>, <font color="#CC3333">MP3 3-bets</font>, CO calls, <font color="#666666">1 fold</font>, SB calls, <font color="#666666">1 fold</font>, UTG calls, UTG+1 folds, UTG+2 calls, Hero . . . ?

So normally I ditch this almost certainly dominated hand out of position, but it looks like we're going to be 7-handed! I have immediate odds of 20:2 Of course there is a decent possibility it's going to get capped by the original raiser as well, but if he does I'm certain no one is folding so I'd be getting something like 9:1 even if I knew he'd be capping.

So I can see arguments for folding, calling or capping it myself. What sayeth the forum?