Yes, I just call the re-raise on the river there isn't much to be gained from re-re-raising.

He could have limped in with A 10 and checked it all the way down; the "OMG monster slowplay" is pretty common and I could see it here as there are no flush draws etc and he would expect a set/2pr to have a pop so he would know if he needed to bet against the board pairing. By putting more money in on the river you will not be called by worse often enough.