Facing huge 3-bet shove on flop, what's the read?

[winningfish]

$2/$4 4-handed table. Just sat down not enough hands for a real read, villain however showed aggression in the 5 hands I saw. I had no table image except folding 5 hands PF.

SB $450
BB $590
UTG/MP $630
Hero $550

Dealt to Hero: [A [img]/images/graemlins/club.gif[/img] K [img]/images/graemlins/club.gif[/img]]
UTG/MP raises to $20, Hero(BU) raises to $52, SB folds, BB folds, MP calls.

Flop ($110): [T [img]/images/graemlins/diamond.gif[/img] 7 [img]/images/graemlins/diamond.gif[/img] 2 [img]/images/graemlins/club.gif[/img]]
MP bets $30, Hero raises to $60, MP raises $548 all in... Hero??

Is this a clear fold? Was his very small flop bet in relation to pot purely to set up this bluff? Due to his small bet size I RR'ed min thinking he'd just call.. even a 3-bet RR by him would've been ok to call the way I play, but the huge shove was a surprise...

Result in white:
<font color="white">
I did fold, but MP showed a bluff. </font>

[Albert Moulton]

Don't post the results.

I'd call the small donk bet and see what the turn brings, and fold to a larger donk bet on the turn if I don't improve.

If you want to raise the donk bet, then you'd have to raise more than a min-raise. Raise to $150 and probably fold to a push.

As played, fold to the push.

And since he showed his cards, make a note and try a min-raise on a similar board when you have a big hand next time. It's generally a bad play, IMO, but if this guy likes to do that kind of thing, then maybe you can trap him at somepoint in the future.