Complex sentence: The film's main character is Fletcher Munson (played by Soderbergh), an office employee working under Theodore Azimuth Schwitters, the leader of a self-help company/religion/lifestyle known as Eventualism, a clear reference to L. Ron Hubbard and Scientology.
Split into simpler sentences: The film's main character is Fletcher Munson (played by Soderbergh), an office employee working under Theodore Azimuth Schwitters. Schwitters is the leader of a self-help company/religion/lifestyle known as Eventualism, a clear reference to L. Ron Hubbard and Scientology.