Probably the most damaging to everyone is when sides are drawn. Another problem occurs when an ultimatum is issued. An ultimatum is a power tool, with much potential for damage. Another problem with an ultimatum is what it does to relationships. So, some innocent young boy, much in need of supervision, has gone overboard and actually seriously injured another child.
All people behave inappropriately from time to time, often inadvertently.
Pointing out the inappropriateness of the action is all that is needed. All of this can be applied equally to biters, to children who figure out that being naked creates a reaction, and any other kind of dangerous or inappropriate play. The stress of unresolved conflicts and unhealed wounds in a Group destroys our enthusiasm, our cooperation, and our compassion. This kind of stress kills applicancy rates, membership renewal rates. Group attendance, and sometimes entire Groups.