At the novice level I think it is acceptable for the ref to explain what a wrestler did wrong. Examples: Locked hands,the ref explains and shows the wrestler before he restarts the match. Starting position, the ref may adjust a foot, knee or hand postion. Open is a different beast. Tell the coach and let him make the adjustment.

Suckerpunch, you are always going to have medal hunters who place in open, but need to feel like a champion by going to novice for the easier competition.