[sj]

........Obviously standing at lead, mouth agape does not reverse partner's call

You should never stand with your mouth open when reacting to a partners call. You should never show any emotion at all. Just go on with the game according to what was called unless it is something that know you can approach him on and then go approach him professionally and talk about it.

In my mind if one official reacts like this to his partners calls, no matter how much you disagree with him, you are just hanging him out to dry and dressing him down in front of everybody in the gym. Just get his call and go on and be straight faced about it. There's one official in my association I won't work with because I saw him do this in a game once to a partner of his. The coaches saw him react and jumped all over it. It created a mess.

Not only that but in this case the call was correct. He had a reason to call it. Prevent it if possible but call it if necessary.