I cannot get rid of it or change the re-install directory and every attempt just loses the snapshot and I have to start over with the broken version.
Because you have Fences in an non-default directory now? If so, that could be why the purge is not working...
To do it manually, in Startup, make sure Fences it not set to start:
Reboot and delete the directory you have Fences installed on. Reinstall in the default directory and see if you are good...
If that fails, run the purge again, reboot, reinstall.
Stardock Support Manager