Flopped trip 5's, could I get away from it?

[cmillard]

No-Limit tournament 15 players
Blinds are 75-150 with 6 players left at my table,I have ~5,000 in chips (I am leader at my table, but another table is going, I don't know how I stand with it). Small stack at table calls big blind (tight, solid player), I call with pocket 5's, small blind folds, big blind (aggressive player, plays a lot of cards) checks. Flop comes 9, 5, 7 with 2 hearts. Solid player checks, I check, aggressive BB bets 500, solid small stack just calls...I want to get rid of any draws, so I raise it to 2,500 (which will put small stack all-in). BB quickly goes all-in, small stack calls,calling will leave me with about 1,200 in chips. I am thinking that the small stack is on a flush draw and the BB must have top pair with a good kicker...He isn't the type player that would not raise in the BB with a pocket pair. Anyway, small stack is on flush draw, BB turns over pocket 9's, his trip 9's hold up, leaving me all but busted. Any advice on how I could have played this differently?
Thanks