No danger? The man is blatantly violating the law - he lied on the permit application for the construction. There's only danger if the laws of our society go unenforced. Leave him alone? Why, so that everyone will get the idea that the police are too frightened to enforce the law against anyone who talks big?
On the other thread, it's been noted that the courts have waived the fees for the guy to file an appeal. How DARE they make it easy for this dispute to be handled in the proper manner! That takes all the fun out of being in the Michigan militia, wanking about heroic Alamo-like last stands against the evil Sheriff of Charlevoix County.