For anyone that might be interested in coming to the LAN and was going to be travelling along I-40 across the NC/TN border, that is not going to be possible.
A major rockslide has covered the road, and will certainly not be cleared by this weekend.
Asheville Citizen-Times (daily newspaper) stories: Link
NC DOT Information Release: Link
NC DOT PDF highlighting Closed section of I-40: Link
Some driving directions for taking I-40 are posted here: Link, not sure how good they would be to get to Sylva. Do some research and figure out a reasonable way, maybe U.S. 441. (no idea how straight/squirrelly that road is, though).