csrutil disable
Restart computer
In the terminal, type
sudo open /Applications/TextEdit.app /System/Library/LaunchDaemons/com.apple.ManagedClient.enroll.plist
change
<key>com.apple.ManagedClient.enroll</key>
<true/>
to
<key>com.apple.ManagedClient.enroll</key>
<false/>
So that the changes take effect
one of my users had to disable sip. his volume was encrypted, so we rebooted normally, and killed his internet right after it checked for internet. and he was able to run
sudo rm /var/db/ConfigurationProfiles/Settings/.cloudConfigHasActivationRecord
sudo rm /var/db/ConfigurationProfiles/Settings/.cloudConfigRecordFound
sudo touch /var/db/ConfigurationProfiles/Settings/.cloudConfigProfileInstalled
sudo touch /var/db/ConfigurationProfiles/Settings/.cloudConfigRecordNotFound
and add the block addressses.