This is utter insanity. There should be no problem with a church choosing to open its doors and give kids a pretty-fucking-safe place to go for the night. No one should be getting in trouble, or offended. Not the promoters or the people at the church that let the promoters promote. This isn't a matter of respect or disrespect. It's a matter of context, facts, fun, reaching out, and remembering who it is you claim to follow. I say all of this as a committed believing person.
Bad vibes are from hell. Not rock music.