Push, or Stop 'N Go?

[blankoblanco]

This play happened at a WPT final table, with 6 players remaining. Average chip stack is just over 800k. The chip leader has 2.1 mill. The blinds are 10k/20k with 2k antes.

The shortstack is UTG with about 470k chips. He looks down at JJ and raises to 66k total. We can assume this player's UTG raise is respected-that the other players believe he has a strong hand. UTG+1 is a fairly well-known pro who is typically on the aggressive side. He looks down at his hand and re-raises to 195k. We figure his range for re-raising UTG from UTG+1, a very strong play, to be TT+, AQ+. It's folded back to UTG, and it's 129k for him to call with his JJ. He will have 276k left behind if he just calls, and the pot will be about 430k.

Question: Should he push all-in now? We can be almost certain he will be called if he does. Or would it be better to see the flop and push any flop? Or only push any flop not containing an Ace? Why?