Prima 25-50 NL Hand #2: Folding QQ on an all-unders flop?

[neon]

25-50 NL on Prima. Full ring.

Relevant stacks and reads:

UTG: ~$4,000, no special read, seems pretty solid.
UTG+1: ~$5,500, just sat down, no read.
MP: ~$15,000, tripled up from one hand about an orbit ago where he flopped the nut str8 vs. a set and an overpair. Seems solid, both pre and post flop.
Hero: ~$8,200 in BB w/ QQ, suits unimportant

UTG limps, UTG+1 makes it $300 to go (larger than average raise--lots will make this type of raise w/ JJ, 1010, but again, no read), MP calls, Hero calls, UTG calls.

Pot is ~$1225.

Flop is J9x two spaids. Checked around to UTG+1, who fires pot. MP folds, Hero folds, UTG folds.

Whaddya think? Standard fold out of position here sans read? Too tight? If so, when to get frisky?

Thanks in advance.