I suspect the parents secreted him out on the so-called camping trip they took on 09/11. They placed the camper shell in the bed of their pickup truck and took off, maybe with him in the cab or in the camper portion. They took him some place and dropped him off with money, clothes and food, but not the Carlton Reserve. But at some point, unless he fled the country, he'll have to come up for air and now his parents can be arrested if they help him.
BTW, there is a good discussion on a couple of other threads by flaglady47 that he may well be a paranoid schizophrenic,