Problem on deleting offline DC

Our DC controllers are running under SP4 already and all patches were updated from the internet.

One more thing, I’ve seized all the master role from a defective server using the NTDSUTILS command, im trying to remove the defective DC controller which previously holds all the operations master role, the message is “DSA object cannot be deleted”. I want to delete the server but it wont allow me. THe DOmain Naming Master also cannto be contacted. Oh boy, this is what we called “DISASTER”