Avoided Going Broke on this Crazy Flop...

My opponent played it sneaky as he limped in from an unopened pot from the small blind and I have 7-6. When the flop came A-7-6, I am initially thinking, New Found Glory songs going off in my head but...

PokerStars Game #7703708868: Hold'em No Limit ($0.50/$1.00) - 2006/12/31 - 21:36:16 (ET)
Table 'Ehrdni' 9-max Seat #1 is the button
Seat 1: Guy Smiley 1 ($109.50 in chips)
Seat 2: VinceC ($99 in chips)
Seat 3: WPTunderdog ($143.20 in chips)
Seat 4: CARDIAC911 ($64.10 in chips)
Seat 5: BadBeatsRus2 ($101 in chips)
Seat 6: trappa187 ($34.85 in chips)
Seat 9: Eddie P R ($92 in chips)
VinceC: posts small blind $0.50
WPTunderdog: posts big blind $1
*** HOLE CARDS ***
Dealt to WPTunderdog [7d 6h]
CARDIAC911: folds
BadBeatsRus2: folds
trappa187: folds
Eddie P R: folds
Guy Smiley 1: folds
VinceC: calls $0.50
WPTunderdog: checks
*** FLOP *** [As 6d 7c]
VinceC: bets $3
WPTunderdog: raises $9 to $12
VinceC: calls $9
*** TURN *** [As 6d 7c] [3h]
VinceC: checks
WPTunderdog: bets $20
VinceC: calls $20
*** RIVER *** [As 6d 7c 3h] [Jc]
VinceC: checks
WPTunderdog: checks
*** SHOW DOWN ***
VinceC: shows [6c Ad] (two pair, Aces and Sixes)
WPTunderdog: shows [7d 6h] (two pair, Sevens and Sixes)
VinceC collected $63 from pot
WPTunderdog said, "yike"
*** SUMMARY ***
Total pot $66 | Rake $3
Board [As 6d 7c 3h Jc]
Seat 1: Guy Smiley 1 (button) folded before Flop (didn't bet)
Seat 2: VinceC (small blind) showed [6c Ad] and won ($63) with two pair, Aces and Sixes
Seat 3: WPTunderdog (big blind) showed [7d 6h] and lost with two pair, Sevens and Sixes
Seat 4: CARDIAC911 folded before Flop (didn't bet)
Seat 5: BadBeatsRus2 folded before Flop (didn't bet)
Seat 6: trappa187 folded before Flop (didn't bet)
Seat 9: Eddie P R folded before Flop (didn't bet)