The Board's role is not to interfere in user disputes. Two members of the Board, myself and Anthere, have already commented on this matter, on Meta, but in our position as members of the community, not as members of the Board. The Czech Wikipedia has 14 admins, which seems to me enough people to watch over each other's actions and reverse unfair blocks if those occur. I don't see what the Board could do if the community there has decided that you should be de-adminned or blocked. Do you have dispute resolution mechanisms in place on that Wikipedia? Is there another user you trust who could try to mediate for you?
Angela.