I have seized the PDC and Domain naming master roles from a failed domain controler recently. This domain controller is now back to life. I know it is stringly recommended to never bring back a domain controller after seizing its domain naming master role. I have cleaned up the meta data from active directory. My question is: If i run DCPROMO /forceremoval on the domain controler to demote him. Can i join him to the domain or will it cause active directory problems ??