I graduated from college, and I've seen my fair share of wacky professors. And YES, sometimes I've had to go to the head of the subject department. And when THAT didn't work, I went to the dean. Usually the buck stops at the Dean.
If your professor is a follower or supporter of Scientology, I don't see how he could possibly teaching psychology.
If I were you, I'd make an <i>appointment</i> with the head of the psych department. Bring JUST A FEW bits of information that connect the council to scientology and scientology's disregard for psychology and psychiatry. Stress to the head or dean that you are NOT trying to get anyone chastized, but rather, you feel very uncomfortable learning from someone in that capacity and are humbly requesting a class change. I went to NYU and I had a class change TWICE due to unusual circumstances, so they do it for you when the situation warrants it.
Look up your professor on [
www.ratemyprofessors.com] or [
www.rateaprof.com] . GOOD LUCK!