Here's a link to an L.A. Times story that has a lot of new (to me, anyway) details. Apparently he had no map but DID have a compass, which surprises me, since he apparently made little use of it, heading miles and miles in the opposite direction from his car, the campground and a major highway which he would have known to be generally north of where he was hiking. He must've gotten disoriented very quickly. He owes his life to whoever it was who spotted his tracks. He was in the least likely of places for searchers to look.
http://www.latimes.com/news/local/la-me ... 2464.story