Flopped nut straight on a 2 suit board, when to come alive?

[Jinx]

BM 100 hollywood game. Real fishy table. Guy to my right is an ultra LAG who's gotten a good run of cards. Everyone else in the hand is moderately fishy.

2 limpers, hero limps T [img]/images/graemlins/diamond.gif[/img]K [img]/images/graemlins/spade.gif[/img] in CO. Both blinds come along, 11 bucks in pot after rake.

Flop comes 9 [img]/images/graemlins/club.gif[/img]J [img]/images/graemlins/spade.gif[/img]Q [img]/images/graemlins/spade.gif[/img], checked to ultra lag who bets 15. Do I raise here or do I wait for turn to come alive on a non spade?