If I felt that strongly about it, I would write an e-mail to the AD or school administrator the next day. At times, parents complaining to the AD come off as parents complaining. An official, in a neutral viewpoint, may carry more weight.
We have a
VB coach in our area is sounds just like this guy. I always think to myself, I can't believe they let this guy coach/instruct youth. Its really disappointing and I am not one that believes kids need to be coddled, but dropping f-bombs in the locker room to me has no business in HS athletics.