Some additional information: One of the best reads on how Scientology controls it's public and staff is cotained here.
Social Control in Scientology
A look at the methods of entrapment
by Bob Penny
Available in PDF (35 pages, 99K) or PostScript (35 pages, 79K gzipped) formats
Table of Contents
"TRs" (Training Routines)
Friends to Be Cooperated With
A Destructive Cult
Scientology Training: Selling "Hard Sell"
Learning How to Learn
How Questions are Handled
I Will Wait until You Stop Asking
Another Example of Scientology Training: "I Am Not Your Auditor"
A Separate Realm of Thought
Start of the Trap: The Numbers Game
The Trap Continues: Gradual Erosion
After Gradual Erosion: Hard Sell
The Creation of Ignorance
But I Thought You Cared about Your Children...
Look Only Where I Tell You to Look
Take a Mile If He Gives an Inch
In Other Words... (a summary)
Ethics as an Assertion
Ethics as the Destruction of Values
Advanced Skills of Being In-Ethics
The Defeat of Street Smarts
Caveat Vendor (Seller Beware)
An Example: Narconon and the Purification Rundown
Certainty vs Truth
An Example of Word Games: The Word Control
I Say BLUE; I Dare You To Say GREEN
The Web of Group-Think
Something Done Other Than What Was Said
Enforcing the Appearances of Results
Don't Overlook the Obvious Absurdity
About the Author
"Bob Penny, one of the founders of FACTNet (Fight Against Coercive Tactics Network), gives this account of how his book was originally published in a dual edition with Margery Wakefield's book, The Road to Xenu :
Margery wrote the first part of the book (The Road to Xenu), and I wrote the second part (Social Control in Scientology). We decided that the two parts complemented each other, so we published them together in one volume which we first released at the 1991 Cult Awareness Network conference in Oklahoma City. The printing was done in response to demand at the nearest Kinko's or other quick printer. The volumes were bound in a thermal binding machine of mine. Both Margery's work and mine were released to the public domain in 1993, when they were offered for download on the (non-internet) FACTNet BBS. Neither are on file with the Library of Congress unless someone else put them there. The text has been available (with no remuneration to either Margery or me) on the FACTNet BBS and on countless Web and ftp sites for I know not how long. "