Ex-Scientology Kids – Disconnection – Disconnection is a Scientology practice of cutting all ties and all communication with someone who is declared a Suppressive Person (evil) by the Church of Scientology. This may include family, friends, loved ones, work associates, acquaintances, or anyone else found Suppressive by the Church.
Disconnection is a very touchy topic among Scientologists and critics both. Scientologists believe that Disconnection is generally a necessary action that, when undertaken, benefits the group as a whole. Critics believe this is an extremely harmful practice akin to emotional blackmail that destroys families and interpersonal relationships.
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Where in Scientology does it actually say that someone has to Disconnect?
From: HCO BULLETIN OF 10 SEPTEMBER 1983 “PTSness and Disconnection”
“A Scientologist can become PTS by reason of being connected to someone that is antagonistic to Scientology or its tenets. In order to resolve the PTS condition, he either HANDLES the other person’s antagonism (as covered in the materials on PTS handling) or, as a last resort when all attempts to handle have failed, he disconnects from the person. He is simply exercising his right to communicate or not to communicate with a particular person.
“With our tech of handle or disconnect, we are, in actual fact, doing nothing different than any society or group or marriage down through thousands of years.”

“An Ethics Officer can encounter a situation where someone is factually connected to a suppressive person, in present time. This is a person whose normal operating basis is one of making others smaller, less able, less powerful. He does not want anyone to get better, at all.
“In truth, an SP is absolutely, completely terrified of anyone becoming more powerful.
“In such an instance the PTS isn’t going to get anywhere trying to “handle” the person. The answer is to sever the connection.”:  http://exscientologykids.com/disconnection/