As I believe was mentioned here not long ago, as far as DSM-IV is concerned, dissociation is to be considered a "disorder" only if it bothers the person who is experiencing it.
As should not be a surprise, I completely agree with you that the science of dissociative disorders pretty much *has* to be considered when evaluating claims of "spiritual experience." If it quacks like dissociation and acts like dissociation but claims to be enlightenment, most sane people are going to come down on the side of dissociation.
