I've also heard that Hubbard started this BS 'church' to avoid taxes. He made the whole thing up, as is obvious to anyone who has read his science fiction. He always wrote 'tongue in cheek' and that's what Dianetics is.
What are you talking about? Dianetics is real! I saw the commercials. Hell, the meaning of life is on page 237!
I haven't seen those commercials in years. They always amused me.