From the descriptions given by OldSkool... I'd say that the association of those people with TWI defense attorneys is right on the mark. Now, I understand the term "cult experts" as used here are indicative of the poster's impressions. My hunch is that those people were human resources consultants. Clearly, TWI had much more of a legal problem with labor law compliance than what was alleged in the lawsuit by the Allens.
Rather than indicative of a cult, per se, that kind of problem with managing human resources is very common in American corporate life... including in government agencies. Perhaps ESPECIALLY in government agencies. Because every organization that functions because of the labor of workers is under stress (pressure) to get as much effort/productivity out of the individual(s) for the least possible amount of wages/salary they have to pay.
I worked in a large state government agency longer than anywhere else in my working career.
Where most organizations rely on its workers simply not understanding (and therefore unable to assert) their rights as employees, TWI took it a step further by having the sacrifice narrative, appealing to a noble goal. Does anyone remember how that ties in to Dale Carnegie's book (How to Win Friends and Influence People)?