Sadly it is true that Mitchell's is closed and the property is for sale. My understanding (although not first hand) is that the owner of Mitchell's lost the business in a high stakes poker game - to Bill Ellis, owner of Bill's BBQ in Wilson. This closing information came from a reliable individual who was privy to the goings on.
It is a shame that Bill Ellis chose to close the place rather than continue to have someone run it for him. IMHO, Mitchell's bbq was far better than Bill's since Bill re-opened following their flood out from the hurricane a few years ago.