nl400: AK button squeeze called and shoved on

[Psydoc]

I've fairly active at this table, catching some cards and maybe running something like 26/24/5. UTG is a decent somewhat laggy reg. I've squeezed him at least once and 4-bet him earlier this session in bvb. BB is not very good obviously.

UTG = 28/22/5 (lots of hands)
BB = 50/9/1.7 (120 hands)

SB: $142.00
BB: $351.50
UTG: $642.00
CO: $419.00
Hero (BTN): $401.00

Preflop: Hero is dealt A[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/club.gif[/img] (5 Players)
<font color="red">UTG raises to $14.00</font>, CO calls $14.00, <font color="red">Hero raises to $62.00</font>, SB folds, BB calls $58.00, <font color="red">UTG raises all-in to $642.00</font>, CO folds, Hero???

BB's call is a bit scary obviously, and for UTG to shove over that, I'm thinking he has to have something pretty solid too. Is calling here +EV?