Our group has been introduced to the term "personal Mythology".
It is new to most of us. So far we think this area of study has potential to explain the actions of the Governing Body and all in the "organization". Perhaps not a substitute for the term "cognitive disonance", but an additional term that adds insight into the thinking of Jehovah's Witnesses. Even if it can only be applied to individuals that is helpful.
Wikipedia has an article with references.
What we would like is someone who knows this subject and can point us in a direction that will save us time and energy. Specific ways that the Governing Body can be explained as is in this catagory. Then how individual witnesses are not really in the "truth", but are actually in what can be more accuratley described as the "compromise."