@smiddy3: "These ones that come back are not stupid they know they have been manipulated and they will never be loyal to the religion of Jehovah's Witnesses."
There are some victims of shunning who have learned to deal with their trauma of familial betrayal in precisely the opposite way. I know personally of a few who have returned to the Organization with a newfound sense of Stockholm Syndrome. These hostages have coped by idolizing the cold hand that beat them and severed them from the love of their family. The reality that their families may not sincerely love them in the truest sense of the word perhaps became too unbearable to confront. So, the victim sought refuge in the fantasy of those who wronged them being the most loving, caring, benevolent, life-saving connections they could ever have.
Alternatively, as you brought out, a similar opinion to yours is held by Harvard Professor of Psychology, Steven Pinker. He writes:
"If dissenters are punished, and can anticipate they're going to be punished, then you may have a situation where no one actually believes something, but everyone believes that everyone else believes it. Therefore, no one is willing to be the little boy that says the emperor is naked."
This explains the lagging financial support and lack of comradeship in the Organization. The amount of PIMO members silenced by the threat of shunning may be a number we'll never know.