I don't really know why, but I know he looked really mad about it last night. I thought he was playing really well until that point and than not so much. I think he's a pretty emotional guy and does not take getting yelled at well. Some guys respond well to that and some don't.
For someone who takes so many awful shots, and complained that the team wasn't playing together after the game, Smart has a lot of nerve. While I understand it wasn't Brown's smartest play of the game, at least he was trying to play aggressive and go to the rim.
On a team full of guys who like nothing better than chucking up 3's, I find it refreshing.