It seems this was done through Nancy Salzman's application of the NLP voodoo she had used as a chronic pain therapist, and possibly boosted by immense pressure to not tic or else be seen as both a failure and a PR danger to the cult. However it was done, it was clearly successful. Are there any studies about "actual" (non-internet video related) Tourette's patients transmitting tics to each other?
https://www.psychologytoday.com/intl/blog/overthinking-tv/20...