I read this newspaper article from a New Zealand newspaper with my own eyes. The countries champion has been banned and stripped of his title because in the Studio he belongs to (in which he is allowed to teach Social Couples ). To help the Studio he taught a competition couple. That was enough to get him banned by his association. How ridiculace is that Here where i live, a visiting competing top German couple were allowed to teach and it was advertsed on the net.
This is how unfair this can become. If the banned person took the Dance Society to court the costs would come from his own pocket. The Society would defend the action with his own money. He being a paid up member.

"The countries champion has been banned and stripped of his title because in the Studio he belongs to (in which he is allowed to teach Social Couples ). To help the Studio he taught a competition couple."

If the rules in your country prohibit this, you had better follow them or expect the consequences. Perhaps it's time for a discussion of what the rules in your country should be, but as long as they are what they are, there should be consequences for violating them.

All the better that it happened to the champion and not to some "nobody" as it shows that the rules are evenly applied to all, regardless of stature. That's a concept called the "rule of law" and is a basic foundation of organized society.

Typically the best career move for the dancer is to turn professional at this point.