Bill,
Is there ever a time, or situation, that would occur when you would ever allow the action to back-up to the skipped player and release the out of turn from his obvious mistake?
Or, in our original question: if you felt certain that Player C was unaware of Player B's action, would you release Player C from his errant wager? If so, would it only be by the strict rule where action has not changed? Or would you just correct the obvious mistake, back-up the action and allow Player C all options?
I can't count how many times I've stopped an out of turn player from acting, corrected the action to the proper bettor and continued without incident. Example: Player A (Johnny) bets Player C (Sally) calls before Player B (Tony) acts. My response: "Sally, hold on...the action is on Tony" while pushing Sally her bet back. Sally would usually reply with,: "Oh, I'm sorry, I thought the bet was on me." Problem corrected and action proceeds without incident. If this becomes a regular practice of Sally, then we're talking about something altogether different.
I would call the floor and let them know that Sally was warned about acting out of turn and she continues to not wait her turn. Let the floor handle it.
One other point: Bill, you are punishing Player C no matter what...by that I mean, he can never retract his out of turn unless the action changes to him, correct?
Another word that has disappeared from these discussions is the "gross" misunderstanding. We really need to put some figure or percentage, that would define exactly what a "gross" misunderstanding should be. A 100 wager would mean very little when players are betting 1000's...but in a betting round where players are betting 50's and 100's, the 100 wager could be significant.