JTs isolation gone bad

[Burnsabre]

utg limper is uberdonk 90/4/.3/40% WtSD going to river 100% on this board. BB's first hand at the table.

5 handed
utg limps, hero isolates with J [img]/images/graemlins/club.gif[/img]T [img]/images/graemlins/club.gif[/img] in CO, folds to BB who 3 bets, both call.

flop 10sb : 6 [img]/images/graemlins/heart.gif[/img]J [img]/images/graemlins/heart.gif[/img]Q [img]/images/graemlins/spade.gif[/img]
BB bets, utg calls, hero calls

turn: 9[img]/images/graemlins/club.gif[/img]
BB bets, utg calls, hero calls

river: 3[img]/images/graemlins/club.gif[/img]
BB bets, utg calls, hero getting ~12 to 1?

Should I raise this flop?
Will an unknown bet this board 3 times OOP with worse than a J? I figure I got utg beat about half the time.