Dealing with assholes is part of every job. I've never had a job where I didn't have to deal with at least one on a regular basis. I guess if it's something he can't work around then I understand the choice he's made. It's too bad that a band that was still in the process of establishing themselves isn't coming to the US anymore.
I'm not surprised to hear that Danzig was nice to them. Both bands have the same drummer after all.