Ironically, we just discussed this at our association meeting last week.  The general concensus was to do just what you did, with the addition of telling them that if they have a problem with the scorers, they should direct their remarks at the officials about it, not at each other. 
 
Unsportsmanlike conduct is just that - no matter who it's directed at.  Coaches yelling at each other is not much different than trash talking.
		 
		
		
		
		
		
		
		
		
	
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