The Jack Parsons JPL story with it's Satanism, drugs use and L Ron Hubbard connection has been on the internet for years. My suspicion is it's not in print because it would be easier for those Clearwater scum (Scientology) would have a fixed target to sue.
What is simply amazing is that people would follow a religion dreamed up by a person known for writing fiction. His Battlefield Earth series is a long story of deception,violence,drug use,and even the "hero" casually kills with only mild regrets. At best,his science fiction is B grade, not surprised his invented religion is no better.