I personally know three people who have done these seminars. They get attendees to publicly discuss traumatic experiences from their lives including abuse situations. If James found the seminar traumatic or humiliating etc it may well have affected his mental well-being. All speculation on my part based on my experience of those I know who have attended.James Charley page is no longer up but according to his family's FB as of Dec 22 he's still missing.
I think he lost touch with reality after this "landmark education" therapy he went to, wandered off into the wilderness and succumbed to the elements.