Any dispute between cockpit crew can be taken directly to Pro Standards, or may be referred to them by the Chief Pilots Office. The role of Pro Standards is to mediate and in some cases educate pilots in cases like this. It might have turned a pissing match between two pilots into a 'learning experience', rather than the end of their careers.
This may be true in the US but I have not read of it in the UK.
Professional Standards, a union committee, has helped everyone keep pilot issues from escalating. Where I work there is nothing similar in the mechanics union and recently a senior maintenance manager whom I know as a neighbor said how much he wished there was something like it on his side of the airline.