Stop and start desktop couch with "service"?
Seems what I wanted was /usr/lib/desktopcouch/desktopcouch-service and/or /usr/lib/desktopcouch/desktopcouch-stop
The service utility is used to control system wide services, while desktopcouch is a per-user service.
There isn't currently a defined command to kill desktopcouch, but killall desktopcouch-service should do the trick. The service should be started automatically next time it is used.