Anything is possible given the weak steering currents and the intensity of Matthew, he has a mind of his own and I would take any forecasts of track or landfall with a healthy grain of salt, on the other hand, better safe than sorry, if you can move out of harm’s way I would not wait too long to do so whatever you hear about models and tracks because frankly confidence is low on all of this computer output in this case, the bottom line being that Matthew could quite easily show up almost anywhere from Miami to Boston in the next 3-5 days.
If it hugs the coastline, the storm will likely become disorganized and lose intensity as it goes up the coast. But, storms can sometimes gain new life over the warm, shallow sounds of NC. A lot of water soundside of the barrier islands there.