Physics education research, electronic materials, and the musings of Christopher Moore, Ph.D.

This is question about the theory promoted by materialist G.D.Wassermann in 1993 based on the concept of "Shadow Matter",that first was published in "Nature" in 1985 by few cosmologists.Wassermann took this concept and based on that developed the theory that in addition to normal brain/body,there is "shadow matter" brain/body,that develooped on their own physics.This shadow matter body/brain may leave the body during OBE and may survive physical death.
Here is where I first read abour this theory:

recent research into the ‘string theory’ of particle physics suggests that the survival of the human personality after bodily death is, in fact compatible with mechanistic materialism. A development of the theory proposes a form of matter which can interact gravitationally with the matter of atoms, molecules and elementary particles. This matter, termed ‘shadow matter’, consists of free unbound matter of that type extending throughout the universe. When bonded with ordinary matter, it becomes a duplicate of all objects, animate and inanimate. A shadow matter brain could interact with the living brain by means of gravitational quanta of energy, energising nerve impulses. Interaction could take place also through distance, thus explaining telepathy, clairvoyance and out-of-the-body experiences. According to this theory, there is no reason why the shadow matter brain could not exist after death, and psychic phenomena are likely to provide the best means of proving, by modern scientific praxes, the theory of shadow matter, if it exists."
http://gerald-massey.org.uk/massey/cbiog_part_09.htm
What do you think about this theory?
Does it sound logical?Scientific?All thoughts will be appreciated