need help for rule but cant find it

[Robert Goodman]

Originally Posted by Canned Heat

Had a RB nailed for a big loss this week and he undid his helmet and then slammed it to the ground. Called USC on him. Later wondered where the NFHS rules regarding this same issue were found....now I know.

Does there need to be a specific rule about that? Can't the action be judged to be unsportsmanlike on general terms? Or were you looking for whether it was automatically so?

It should be flagged even just for the damage it can do to the helmet. Although the helmet was made to protect the head, to some degree the head also protects the helmet. Empty, they're more vulnerable. But that's the coach in me thinking.