After waiting for my account validation, finally I can contribute to the discussion.
Here is another detour option, but only for early risers. The MARC commuter trains stop at Harpers Ferry and then at Brunswick, MD.
https://www.mta.maryland.gov/schedul...marc-brunswick
At least in theory, it would be possible to ride the commuter train to Brunswick, then hike 3 miles west on the C&O Canal towpath, and pick up the AT again.
I have not tried this, so if anyone does please let the forum know.