That kind of crap should be disallowed from the game. That's a direct action to distract a player. If you're not on the court, shut the hell up, cause that can also cause a technical foul on the player for firing back. They should treat it like a continuation foul. You yell and the player misses....2-3 free throws, you make it, one shot! Maybe even an ejection. I wonder if a Spur has done that?