I would have played it the same probably folding to river bet like 2/3 times without any reads. The way it was played we got to see our FH outs on the river for a chance to stack a 6 or induce a bet from a hand we have beat, and as it happened he fired an above avg. amount imo but a lot of the times the bet will be more like 350 so we get to showdown with the same chips lost as the turn bet option. Also if villain is sneaky at all he could c/r turn with less than a 6 forcing us to make a big mistake folding.