I would ask/talk to him but I can't even have a conversation with the coach. Everything you say can be used against you. He is unsupportive and a lot of times full out rude. He can be great too though. Some days he's fantastic but a lot of days leave my dd in tears. He's done things like this in the past and I don't like it. The teammates don't get along with dd and trust me, if I could I would leave the gym but I can't do that. I'm out of options. Thanks for your opinions and sorry for my mini vent.
I know you said in the other post that you are feeling stuck and that your daughter does not want to leave. What you have described in this post and the other post is emotional abuse. I understand that in this dysfunctional sport we tend to tolerate some level of behavior that if occurred outside of the context of the sport we would never even debate whether or not one should put up with it. However, I get that your daughter has invested pretty much her whole life in this sport and that she does not want to walk away from the sport or the gym. So, if you are not going to leave this gym, I encourage you to keep a very close eye on what is going on in the gym and to do some things to protect and set an example for your daughter.
First, let your daughter know through both your words and actions that the behavior from the coach is not okay. This means setting an example for your daughter by talking to the owner, another coach, whoever you need to talk to about the behavior of the coach. SHe needs to see an example from an adult who has the courage to stand up for what is right.
Second, you need to have lots of ongoing open dialogues with your dd about what is happening in the gym, how she feels about it and what she thinks about it, both what she observes and her own interactions with the coach. She needs to understand on both an intellectual AND emotional level that the coach's unpredictable behavior is due to HIS own issues and that it has nothing to do with her performance or worth as an individual. She cannot just "work harder" or "be a better gymnast" or "do better" to prevent his episodes. He will likely continue to blame the gymnasts (whichever unlucky girl of the day) for his poor behavior. It is all about a need for control gone wild. Be on the lookout for any signs that your daughter is internalizing or taking responsibility for his outbursts. Any thoughts or statements along the lines of "I deserved it," "if only I was better gymnast" "If only I hadn't fallen on that skill" etc. need to be discussed and challenged.
Third, please make sure your child has plenty of other healthy adult role models and authority figures, especially males, in her life so that she can know and understand that this behavior is not normal or acceptable.
A final thought for you, you said in the other thread that you didn't ever think of it as abuse, you just thought he was a "jerk." You have also mentioned that some days he is wonderful. The most "skilled" abusers (in that they are able to get people to stay with them) tend to have very dynamic personalities and can be absolutely wonderful at times and then tension builds and it is like a switch flips and you have the outburst (tension release), followed by a period of calm. (Classic cycle of abuse). It is this unpredictability that is so confusing and damaging to the victims.
Please keep us posted on how things go for you and your daughter.