I would like to see him react to a raise on the flop before I tried this move here. I think it is likely he has an overpair given his pfr% (aa-jj like you said). He might fold it down, but he might put you on a pocket pair and call. If utg+2 thinks you are aggressive he might think you are capable of putting in a raise with 33-88 on this flop because it is still only losing to a larger pocket pair (&22) or a Ten just like JJ-KK plus you get folding equity.
Of course the lag might be laying in the weeds with a 10 like you suggested. I kind of like this type of play here with 3 because the sb is likely to not have a hand, but it makes the bet look stronger in a 3 handed pot with the sb yet to play.

Any chance your continuing this on the turn if you get a call? I don't think I would but just curious.