MOFFICIAL,
Man, I hate it when games get like that. Sometimes the philosophy of "call the game and the players will adjust" just doesn't apply. Well, I guess it does apply, because if they don't adjust they will be sitting down. However, I really don't like to "change" the way a game is being called. Let the game itself dictate the flow. You may find yourself making more calls at certain times, but I like to let the players decide that.
If the play in the post is rough I may call two or three off-ball fouls to get them to lighten up. If they are holding or bumping the guards off the ball I will make sure that I make that call so that they know I'm watching the off-ball stuff too. Then if there are the players that are trouble makers and are just causing problems. The best advise I can recommend is that they can't hurt you when they are on the bench.