[ceczar]

from my more limited experience playing with him i think he pushes the river if he rivers his gutshot and very likely plays a turned straight differently. you've played with him a lot, have you ever seen him CR bluff the river?

IMO he has a missed flush or J6 enough to make this a call. he probably thinks (correctly imo) you're not folding a decent hand to a river lead, so if he was going to bluff this is the way he would have to do it, but i haven't seen him do this type of play.