Go for the "cold-call-reraise"?

[SkittleBrau]

The blinds here are the epitome of loose-passive. They will call to the river with any piece or such draws as "I have an ace". There is a reasonable chance that they may fold to my preflop 3 bet, however.

What makes this somewhat unusual is that MP is just about all-in after his raise. I played it as shown (3 betting) but should I have considered calling to entice the very terrible blinds to stay (planning to cap if it happens to get raised)?

Party Poker 2/4 Hold'em (6 handed) converter

Preflop: Hero is Button with A[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">2 folds</font>, MP calls $2.50 (All-In), Hero calls.