100NL: Shortstack Shove, WTF?

[Kos13]

No reads on the shortstacker. UTG+2 and MP3 seem at least somewhat tight/competent, and CO is pretty loose/donkish. I just sat down a few hands ago.

Ultimate Bet No-Limit Hold'em, $1 BB (10 handed)

Hero ($100)
UTG ($50.35)
UTG+1 ($63.50)
UTG+2 ($62.30)
MP1 ($111.35)
MP2 ($65.35)
MP3 ($49.60)
CO ($145.05)
Button ($19.50)
SB ($14.70)

Preflop: Hero is BB with 2[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, UTG+2 calls $1, <font color="#666666">2 folds</font>, MP3 calls $1, CO calls $1, <font color="#666666">1 fold</font>, SB completes, Hero checks.

Flop: ($5) A[img]/images/graemlins/heart.gif[/img], 2[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
<font color="#CC3333">MP3 bets $13.7 (All-In)</font>, HERO