Sorry to double post, but I feel its better to post in here. Was there any wrong with anyone's play here? Was my chance of not getting drawn out here very low?

PokerStars No-Limit Hold'em, $0.25 BB (9 handed) from (Format: FlopTurnRiver)

UTG ($26.30)
UTG+1 ($25.40)
MP1 ($25.60)
MP2 ($12.35)
MP3 ($20.65)
Hero ($29.10)
Button ($25.15)
SB ($39)
BB ($25)

Preflop: Hero is CO with T, 9.
1 fold, UTG+1 calls $0.25, MP1 calls $0.25, MP2 raises to $0.5, 1 fold, Hero calls $0.50, 1 fold, SB calls $0.40, BB calls $0.25, UTG+1 calls $0.25, MP1 calls $0.25.

Flop: ($3) 7, 6, 8 (6 players)
SB bets $1.5, BB calls $1.50, UTG+1 calls $1.50, MP1 folds, MP2 calls $1.50, Hero raises to $28.6, SB calls $27.10, BB calls $23 (All-In), UTG+1 calls $23.40 (All-In), MP2 folds.

Turn: ($111.10) 4 (4 players, 2 all-in)

River: ($111.10) J (4 players, 2 all-in)

Final Pot: $111.10

Results in white below:
SB has 6d 6s (three of a kind, sixes).
BB has 7s 7c (three of a kind, sevens).
UTG+1 has Ah 3h (high card, ace).
Hero has Ts 9s (straight, jack high).
Outcome: Hero wins $111.09.

BB should have re-raised on flop, especially with hearts out. A3s seems to be getting his money's worth but I didn't chase down the math. I don't believe its possible for 66's to fold since he's only seen you push. 77's Likewise could possibly be getting the best of it. He could have folded maybe (I only play NL50, so don't know) if it were a tighter game but at 25NL he'd be crazy to.

So in conclusion there was only one wrong play and that was slowplaying the flop with a set. This is just one of those minor freak hands, be glad you were on top of the pile.