Did you read the article that I linked? This is much more than a small gathering of friends as the Rabbi claims. He is actually operating a synagogue out of his home, with a web site that welcomes all to come for services! There were 100 residents at the hearing complaining about the cars and traffic. This is not a religious persecution issue; it is about the nuisance that he has created by holding these services in his home.
Orange county zoning does allow for home based religious meetings; I have attended and hosted them myself with no problems, but if they got large enough that it caused this kind of problem with the neighbors, it would be the neighborly thing to do to find some other venue.