This article is from the Scientology and Dianetics FAQ, by email@example.com (Scientology Information Server) with numerous contributions by others.
Yes, Werner Erhard, just prior to creating est, had taken Scientology
courses and received auditing. A number of concepts and procedures in
est are very similar to Scientology; at one time, much of the terminology
was the same. In Scientology, there is an auditing procedure designed
to address difficulties a person may have had by participation in est.