$22 Stars 180 SnG, 81 left, folded to HERO(SB) w/ A3o, BB is big stack

HERO is in the SB and has been playing TAG. LAG big stack in BB. HERO hasn't had any action on preflop raises with big hands, and hasn't shown any of them when everyone else folded.

PokerStars No-Limit Hold'em Tourney, Big Blind is t150 (9 handed) FTR converter on zerodivide.cx

UTG+1 (t3090)
MP1 (t2440)
MP2 (t2085)
MP3 (t3780)
CO (t4690)
Button (t3170)
<font color="#C00000">Hero (t1385)</font>
<font color="#C00000">BB (t6160)</font>
UTG (t2765)

Preflop: Hero is SB with 3[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">7 folds</font>........HERO???

The reason I ask is mainly because of the stack sizes involved. Should HERO fold/call/push?