Dude cold calls for half his stack preflop, just give up?

[smittyuiop]

$69 single table. Made the raise cuz the open raiser had been min raising a ton and I'd been playing tight as hell. SB hasn't been that active so no real read.
Full Tilt Poker, NL Hold'em Tournament, 40/80 Blinds, 8 Players
LeggoPoker.com - Hand History Converter

Hero (BTN): 1,485
SB: 1,078
BB: 2,022
UTG: 3,180
UTG+1: 1,350
MP1: 1,390
MP2: 1,340
CO: 1,655

Pre-Flop: (120) A[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/heart.gif[/img] dealt to Hero (BTN)
4 folds, <font color="red">CO raises to 160</font>, <font color="red">Hero raises to 510</font>, SB calls 470, 2 folds

Flop: (1,260) 2[img]/images/graemlins/spade.gif[/img] J[img]/images/graemlins/heart.gif[/img] 4[img]/images/graemlins/diamond.gif[/img] (2 Players)
SB checks, Hero ...

He has 500 left i have 1000 or so. Do you stick him in on the flop, or am I 100% crushed and is he 100% calling?