Call an all-in on the turn w/ scary board?

[jcm4ccc]

Halfway through a 180 SnG on Stars. Average chips around 4000. 65 players remaining. I am about tenth in chips before this hand started.

Villian played one hand rather poorly, I thought. In the BB with Q2o, he bet a lot of chips on the flop, turn, and river with a KQ7 rainbow flop. Luckily for him, his opponent was even worse than he was.

Seat 1: its a rebuy (2000 in chips)
Seat 2: witchee (2925 in chips) is sitting out
Seat 4: budbuster (6650 in chips)
Seat 5: vipervr3 (6205 in chips)
Seat 6: jcm4ccc (6405 in chips)
Seat 7: igotacesfool (7250 in chips)
Seat 8: mikehas1 (4915 in chips)
Seat 9: FunkiMunki (1955 in chips)

budbuster: posts small blind 75
vipervr3: posts big blind 150

*** HOLE CARDS ***
Dealt to jcm4ccc: Q[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/heart.gif[/img]
jcm4ccc: raises 300 to 450
igotacesfool: folds
mikehas1: folds
FunkiMunki: folds
its a rebuy: folds
witchee: folds
budbuster: calls 375
vipervr3: calls 300

*** FLOP *** 4[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/diamond.gif[/img] 7[img]/images/graemlins/diamond.gif[/img]
budbuster: checks
vipervr3: bets 450
jcm4ccc: raises 1200 to 1650
budbuster: folds
vipervr3: calls 1200

*** TURN *** 5[img]/images/graemlins/heart.gif[/img]
vipervr3: bets 4105 and is all-in