Hi Tyrasoft,
I cannot comment on the value of the healing program he offered because I didn't read anything about it, but his theorical bases or not unlike many ideas that have been discussed here, around both the neurological and the immunological aspects.
This amygdala-centered hypothesis is based on neurology, but immunity is implied as well. I guess his therapy program includes stress-management tools ( meditation, yoga, exercise, etc...), thought reprogramming to calm down the amygdala, which is an emotional alarm system ( with various behavioral therapy tools), and may also include some supplements, and probably many lifestyle changes suggestions for a healthier living, not unlike what is suggest on this forum ( diet changes, methyl support and liver support in general, etc...).