Can just the tilt sensor be deleted and re-added on a Linear Garage Door Controller?

No. The tilt sensor for the Linear Garage Door Control ships pre-enrolled to the Linear hub, and it enrolls simultaneously with the Z-Wave opener. As a result, there is no way to separately delete and re-add the tilt sensor. 

However, the tilt sensor can be re-synced with the Linear Z-Wave Garage Controller. To do so:

1. Press and hold the link button on the Linear Z-Wave Garage Controller for 7-8 seconds until a short beep is heard.
2. Open/close the garage door opener locally (with remote/wall button) so that the sensor moves. If it re-syncs, you should hear an additional beep. If it does not re-sync, factory reset the Linear Z-Wave Garage Controller and try again.

For more information, contact the device manufacturer.