Well, this is indeed undesirable. I find it hard to believe that any true, devoted Mormon would take this action.
To a man and woman, every Mormon I've ever met was genuinely nice, and decent. One hopes that they would condemn any disruption by any rogues amongst their faith.
Of course, I'm assuming that Romney figures in this matter. I fully expect a lot of Mormons to support him, yet I am confident that they will rally behind Sarah Palin once she's captured the nomination. They will be gratefully welcomed.