Not if it turns into a naked tickle fight
I would consider an ambiguous confrontation. After a game, discuss how important good role models are for children at this age. Move the discussion to what you think should happen to role models who don't live up to their responsibilities or worse, lead children down the wrong path. Mention how lucky you are to be in a community where everyone is watching out for each other's children. End the conversation with direct eye contact and a strong handshake.
If evidence shows up, go public.