fixed it by copying over the Uninstall script from another server (installDir/NSH/Uninstall)
ran it, it deletes all associations regardless of the install state of the server. Re-ran the installer and it started a fresh install
if that didn''t work for some reason you'd need to remove:
- that should be enough to get the re-install to go. there's also some symlinks in /lib or /lib64.