CptRegionalJet
To understand the "normal sensing" aspect, imagine that there is an ILS or LOC approach to Rwy 30 (again, imaginary) at Aspen.
You miss the approach and are required to track outbound on the back course. The "sensing" will be normal.
And I don't think it would be a good idea to use any lateral mode beyond HDG -- engineers who designed the avionics aren't likely to have contemplated a LOC signal growing wider in the direction of flight.