So where the Niners fans on this?
Sherman genuinely being a good sport and Crabtree being the punk shoving him in the face.
You're really reaching now. If he was a genuine good sport he would have waited until the game was over and then shook hands on the field when the players greet each other. The way he did it was passive aggressively trying to make Crabtree look bad. It was a move to make himself look alpha over Crabtree and he wasn't going for it.
A good analogy would be if I had a board I laid across a fence and you broke it. Then you turn right around and try and shake my hand. Screw that. You broke my board.