Flat call reraise with suited connector and flop top pair

[betgo]

$2600. Villain is new to the table and is not known to me. What do I do? What is my plan? Was the flat call of the reraise bad?

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $30/$60
9 players
Converter

Stack sizes:
UTG: $2560
UTG+1: $12200
MP1: $5805
Hero: $5740
MP3: $13979
CO: $3183
Button: $5229
SB: $9801
BB: $6914

Pre-flop: (9 players) Hero is MP2 with J[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/heart.gif[/img]
3 folds, <font color="#cc0000">Hero raises to $180</font>, 3 folds, <font color="#cc0000">SB raises to $540</font>, BB folds, Hero calls.

Flop: 8[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] ($1140, 2 players)
<font color="#cc0000">SB bets $760</font>, Hero ???

[KneeCo]

This flop being tricky is precisely why even with position imo you can just fold to his pf RR and not lose sleep over it.

Essentially, the fact that you don't really know what to do here means you put in 1/10th of your stack pf hoping to hit 2pair+ or some combo draw.