...
It is also a good idea to temporarily point the stag binaries at a "do nothing" script to prevent further tagging attempts via stag. See:
/afs/slac/g/glast/ground/applications/install
i386_linux26/usr/i386_rhel50/bin and
amd64_linux26/usr/i386_rhel50/bin
To re-enable tagging, just undo the changes made above.