All-in or a smaller reraise?

[trojanrabbit]

Typical 10+1 Party game. UTG+1 is a horrible player who just called a raise and a reraise all-in with K8. SB could be tilting on this hand since it was his QQ that was beat by the K8.

Party Poker No-Limit Hold'em Tourney, Big Blind is t30 (9 handed)

BB (t905)
Hero (t770)
UTG+1 (t2200)
MP1 (t1350)
MP2 (t800)
MP3 (t570)
CO (t595)
Button (t650)
SB (t160)

Preflop: Hero is UTG with J[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/heart.gif[/img].
<font color="CC3333">Hero raises to t90</font>, UTG+1 calls t90, MP1 calls t90, MP2 folds, MP3 folds, CO folds, Button folds, <font color="CC3333">SB raises to t150</font>, BB folds, <font color="CC3333">Hero raises to t770 (All-In)</font>, UTG+1 calls t680, MP1 folds, SB calls t10 (All-In).

I have no idea what SB was saving his last 10 chips for, but my question is at the point where I made my all-in reraise. Is the push automatic or should I consider a smaller reraise and see a flop?