If I recall, Chorus Hub installs as a Windows Service. I think you can look in the Services list in Control Panel or Task Manager to turn it off.
I don’t see another solution since Chorus Hub is designed to be run with one instance per network.
FWIW, you could S/R to a USB drive while traveling. Using a USB drive would give you the piece-of-mind that the data is backed up in another location (not just on your computer).
Or you could just use Mark Point in Project History under the Project menu instead of doing a S/R if you aren’t actually going to be doing a S/R with anyone else.