JJ vs 2 opponents on low board

[Radford999]

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

SB (t820)
BB (t4230)
Radford999 (t4140)
UTG+1 (t2750)
MP1 (t2950)
MP2 (t5870)
MP3 (t340)
CO (t3040)
Button (t2760)

Preflop: Radford999 is UTG with J[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">Radford999 raises to t70</font>, UTG+1 calls t70, <font color="#666666">1 fold</font>, MP2 calls t70, <font color="#666666">2 folds</font>, Button calls t70, <font color="#666666">2 folds</font>.

Flop: (t310) 2[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Radford999 bets t215</font>, <font color="#CC3333">UTG+1 raises to t500</font>, MP2 folds, Button calls t500, Radford999 calls t285.

Turn: (t1810) 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
Radford999 checks, <font color="#CC3333">UTG+1 bets t2180 (All-In)</font>, Button calls t2180, <font color="red">Radford999 ??????</font>

Interesting hand. The question i have to ask myself now is should i have lead out on the turn? But UTG+1's near to minimum raise on the flop scared me a little, so did the button calling. So should i make a lead of about 1/2 the pot on the turn to see where my hand stands. If i get raised, then i can safely laydown my hand imo. Soon as UTG+1 pushes and the button calls, jacks just can't be any good anymore, right?

What do you think?