This is cross-posted and hopefully the Mods will close or move this in due course.

The answer here is the same as on AV.

This is not a fuel stop, it is a scheduled stop on a route and AV sells tickets on the route. If you are permitted to disembark and do not reboard, the remainder of your ticket, including the return, will be cancelled and will retain whatever value it retains under your fare rules.

AV, just like all carriers, does a head count before departure and compares that to the boarding count it should have. This is done for safety (weight & balance) and security purposes. Having to recalculate the W&B will take a good while and will delay departure. Very unlikely that this passes unnoticed.

As others have told you, you will need to have your ticket reissued to the new destination.