As I read fast and scan things, I cannot claim that words by words I agree with you. But for those parts that I got, and it is a big part, I know your account true. It is a parasite but could be stronger than the host, the victim. In occasions it kills the person or it commands to the victim to kill other people and meanwhile the victim might lose his life obeying the command. If not it fully cripple and enslave the host into that stupid constant performance. There are many examples but the famous one is say John Nash who had such a powerful ‘brain’ and lived dysfunction for best decades of his life. Surprisingly, mainstream psychiatry is not interested to study such a fascinating creature. The humble idea that I can suggest is that this parasite is universal and its performance is not related to the biography of the person. It could be that it become created due to the biography of victim, such as the host being himself victim of harsh abuse and trauma, but then the parasite has a similar performance. This proposition is somehow needs clarification which is beyond the scope of a comment. Briefly host should not accept that he has done something wrong that has been inflicted with such unproportioned punishment.