Yeah, it makes as much sense as putting Woody Allen at the end of it, doing a joke as a ghost, and ending the movie with New Orleans Jazz music at the credits. Hayden as a ghost is one of the changes I still refuse to belive in, as it wouldn't make any sense at all, and would create a huge plot hole... well I refused to belive in THX-1138 special edition, and it was actually made, so...