[soded]

Here at 2+2 we advocate protecting our blinds, so he should call with any semi-decent hand and probably woulda raised with anything fairly big, given his stats. (if he's following this reasoning). After that I'm not certain what he'd have. Maybe the 7 helped him and he was holding A7s. I can't see him with 77, I can see him with some lower pp, none of which hit, and maybe he was holding 1 diamond with whatever hand he had, but can't call an all in correctly as you are only giving him 1.5:1 pot odds to win with a draw on the river. Even with an OESD and flush draw, it wouldn't be "correct" to call 1.5:1, (say with 55 one being a diamond or something). Also in HU blind steal position situations, I find c-bets are given less respect, and he could just be trying to bluff you out on the turn... poorly at that...