[aargh57]

I would think so. If he's LAGy he can probably call you with 2 pair or even 1 pair quite often. If he had the A you would've probably gotten raised on the turn. Sometimes he'll raise you and turn over the A but I think the majority of the time you will win with a value bet here (enough to make up for the times he raises you with a better hand). Also, if he's unpredictable, his raising doesn't always necessarily mean he's got the A. He may try a bluff raise here as well. I know this would be rare but this type of player may try it.