In Pittsburgh, our team was warned twice in the practice rounds for me (the coach) to watch where my hands were. With all of the music and cheering, sometimes pointing to goals, tetras, etc., is valuable to making sure your instructions were recieved, but I quickly learned to point up high instead of down lower. The last thing I'd want would be to DQ my team from a match for trying to make a point clear and accidentally hitting the controls... It's unfortunate that it happened in your match, but on the bright side I'm sure it'll never happen again
Good Luck