mentally deaged!Sam

[sexysora.livejournal.com]

I'm looking for a story that I read a while back. I remember that it was Sam being mentally deaged to five years old. Dean took him to the hospital and was told that there is nothing wrong with him, and Sam is 'choosing' to be five years old. The doctors and a social worker were so interested in his case that they were trying to get 'custody' of him saying that Dean was unfit to take care of Sam. At the end the social worker tried to take him from Dean and Bobby, but couldn't because Sam was back to normal and had no recollection of what happened.