Dr Kerzin (who reportedly made the claim) might have been misunderstood by the reporter and/or the editor of the article.
It might be truer to say that he is dead and meditating (for some suitably vague definition of "him", given that the self is difficult to define and that Tibetan Buddhists believe in a continuing existence after death and rebirth).
Does this audio track create a bond between the brain and the central nervous system whilst stimulating the pineal gland?
The brain is part of the CNS so it is nonsensical to write of creating a bond between them.
The pineal gland's activity is primarily affected by light not by sound.
Is this just a hoax?
There is no Jeffery Marlon Harris FRCS ...
There seem to be a two studies that tested the ability of practioners of that method and it found that they can substantially influence their body temperature.
Benson et al 1982). Body temperature changes during the practice of g Tum-mo (heat) yoga. Nature, 295, 234-236.
: We report here that in a study performed there in February 1981, we found that ...