How do you recover communications between your SmartCenter Server and Security Gateway if you "lock" yourself out via a rule or policy mis-configuration?

How do you recover communications between your SmartCenter Server and Security Gateway if
you “lock” yourself out via a rule or policy mis-configuration?

A.
cpstop

B.
fw unload policy

C.
fw delete all.all

D.
fwunloadlocal

Explanation: