2/5 live (FR)...some discussion at table on this

[J.A.K.]

Villain is solid player, and this game is an anomaly as poker games go. 40% of the players can have ATC at any time....literally. My image is tight and I am stuck a couple of buy-ins mainly due to flopping 2nd nut flush. Game is generally loose passive with 4+ seeing flop regardless of raise pre.

Hero is SB w/ 6c7c.

UTG minraises to 10, 4 calls (cant remember exact order), villain raises OTB to 50.

Hero calls(?) All fold.

Flop: 5s6h8c

Hero?