LIMP RR, fold to flop shove? 2,4NL = KK

[rand]

villain is an idiot, 54/16/1.68

he acted fairly quickly pre and insta shoved flop...

Full Tilt Poker - No Limit Hold'em Cash Game - $2/$4 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $396.00
BB: $829.40
UTG: $405.50
Hero (MP): $638.20
CO: $845.00
BTN: $394.00

Preflop: Hero is dealt K[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/spade.gif[/img] (6 Players)
UTG calls $4.00, <font color="red">Hero raises to $20.00</font>, 4 folds, <font color="red">UTG raises to $104.00</font>, Hero calls $84.00

Flop: ($214) T[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">UTG bets all-in for $301.50</font>, [i]Hero ??