Strangely, my Bible Study Conductor spoke to me about how sometimes when witnessing someone would ask a question, and he would recall an answer that he had forgotten he knew, and how it must have been the Holy Spirit taking him over.
"Holy Spirit" in WT terms aka cult personality. Creepy.
I just watched a video on Youtube with Steve Hassan. He was at an exJW event/film review answering questions from ex members. He did confirm Jehovah's Witnesses (cult members in general) have dissociative personality disorders--cult personality versus the natural/real personality.