I think there is validity in pursuing mind control/cult connection. Jaynes does discuss the General Bicameral Paradigm that may have existed after the breakdown of bicameralism. Most if not of all if this seems to be applicable to cults in my opinion.
"By this phrase, I mean an hypothesized structure behind a large class of phenomena of diminished consciousness which I am interpreting as holdovers from our earlier mentality.
The paradigm has four aspects:
the collective cognitive imperative, or belief system, a culturally defined agreed on expectancy or prescription which defines the particular form of a phenomenon and the roles to be acted out within that form;
an induction or formally ritualized procedure whose function is the narrowing of consciousness by focusing attention on a small range of preoccupations;
the trance itself, a response to both the preceding, characterized by a lessening of consciousness or its loss, the diminishing of the analog "I", or its loss, resulting in a role that is accepted, tolerated, or encouraged by the group; and
the archaic authorization to which the trance is directed or related to, usually a god, but sometimes a person who is accepted by the individual and his culture as an authority over the individual, and who by the collective cognitive imperative is prescribed to responsible for controlling the trance state."