c. An obviously unfair act not specifically covered by the rules occurs during the game. This includes substitutes, coaches or any other persons subject to the rules, other than a player or official, interfering in any way with the ball or a player while the ball is in play.

The penalty for that is: "The referee may take any action they consider equitable, which includes directing that the down be repeated, including assessing a 15-yard penalty, awarding a score, or suspending or forfeiting the game."