PLO8 Dummy Straight, what should I have done on river?

[Burdzthewurd]

Can I really check/fold here? I figured 1/2 pot would be ok, but I should have easily mucked this after a raise, even a minraise. Can't really think that flop hits anyone, but still a donkey semi-bluff. I still think I have best hand on the turn, I can't think he has a big wrap draw or just called the flop with AJxx.

http://www.pokerhand.org/index.php?p...mp;hand=172643