Defensive calls Illegal...?

[ajmc]

I believe the key comment in the case book play included earlier is, "If in the official's judgment the action by B1 was for the purpose of disconcerting or hindering A, it is an unsportsmanlike conduct foul."

If you want to put up with a never ending escalation of nonsense, you can ignore this silliness, otherwise you can choose to put a stop to it, either by letting the linemen, on both teams, know in uncertain terms it's unacceptable or, if necessary, flagging someone.