Desperation move

I was getting very short and had to do something. I checked SNG wiz and I actually made the right play. I came back to win this one. Sweet!

Full Tilt Poker $2 + $0.25 No Limit Hold'em Tournament - t120/t240 Blinds - 6 players

UTG: t1880 7.83 BBs
MP: t3060 12.75 BBs
CO: t4930 20.54 BBs
BTN: t1080 4.50 BBs
Hero (SB): t720 3 BBs
BB: t1830 7.62 BBs

Pre Flop: (t360) Hero is SB with 7 8
3 folds, BTN raises to t1080 all in, Hero calls t600 all in, 1 fold

Flop: (t1680) 2 7 3 (2 players - 2 are all in)
Turn: (t1680) 9 (2 players - 2 are all in)
River: (t1680) J (2 players - 2 are all in)

Final Pot: t1680

BTN shows Q K (King Queen high)
Hero shows 7 8 (a pair of Sevens)
Hero wins t1680