There is nothing official you can do other than have a copy of the rules handy and show the observer how embarrassed they should be. Personally, I would tell the observer that they have the rule wrong, quickly ask the opponent (or captain of opposing team) if they agree the rule (not ruling, but actual rule) is being applied incorrectly to give the observer pause to double check him or herself. Mistakes happen.2. I had an observer tell me during one of our games that an uncontested offensive receiver foul should go back to the thrower. However, an earlier thread on this board says that it should have been a turnover. Is there any way that players are allowed to dispute an observer call when observers don't know the rules? (fyi: this observer was great all weekend, except for this one call). It seems like there should be a way to prove that the rule is more important than the observer, but i don't know if it's allowed.No.(also had an opponent call fast count on an observer as she walked the disc to the line. is that allowed??? ).