Underfull against an any-2 man, river bet opinions...

[chardy999]

Villian has already dumped a lot of coin to me as I have a very good grasp of his very loose aggressive game - he is a classic any-2 donk. Hand played on Titan where the hand histories are pictorial, so bear with me...

5 handed at 6 player 1/2NL table.

UTG (villian): $243 stack calls $2
Cutoff: folds
Button (hero): $341 stack raises to $9 with 7d 7h.
SB: folds
BB: folds
UTG: calls $9

Flop: Qh Ts 8d

UTG: Checks
Button: Bets $18
UTG: Calls $18

Turn: Th

UTG: Checks
Button: Checks

River: 7s

UTG: Bets $56
Button: Raises allin for $314 ???

UTG has $160 behind.

Does this only get called by hands that beat me?
Thoughts...