Re: Uncooperative participant
Nevertheless, itīs your friends dojo as he probably started things up. And itīs a lot of work to start from zero.
Even if this person has a higher rank he has to respect that. Especially, as heīs from another organization, so usually his rank in another organization is: 6th kyu.
So my advice: Fight this person out or there will never be peace. If he adresses the association, tell them you views, that he is unbearable. Get together and refuse to train with him.
Awful situation, my symphaties.