Per order of the WMNF Forest Supervisor, the Wildcat Ski Area ski trails are closed to the public until further notice. I assume this has to do with the demolition work that was done last fall up on the summit, but that's really just a guess. In the past when this has happened there has not been a problem with people crossing the summit on the A.T., just no going up or down the ski trails.
http://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprd3800274.pdf
http://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprd3800274.pdf