Whether you eventually leave or not is between you and Jesus. Sad to say, this is par for the course in most church music ministries. Someone with little talent is told by someone with little musical knowledge they sound good and they are off to the races to establish their "ministry". I am not that concerned with someone rearranging sacred music as long as it is tasteful and the congregation can participate (remember them). Your "director" sounds like he is on an ego trip. All you can do is pray for his eyes to be opened and that he will be open to change. I have done this and it seems to work subliminally. I play the "circus song" when things are getting out of hand. The leader finally asked me WHY I did that and I said it's what you play at a circus. They were mad, but, I made my point w/o an argument! When I feel things getting crazy, I go to the circus if you know what I mean . I will also tell you, I've been at this church over 20 years so they know I'm not a moron.