IMHO, having studied a very little psyc., the VM is far too organized for
glossolalia. In fact, glossolalia would look much like noise when subjected
to analysis. If, on the other hand, a person with a strange but organized
world view, and what is commonly referred to as a "paranoid" personality,
might very well hide the strange view with encryption or code. In that
casae, there would be no desire to pass on the knowledge, hence no written
down key. If the world view were strange enough, there would be no referent
in, say, herbals or astrology of his time. If a code, the "codebook" would
be well hidden.