You were lucky in that if is disk is disabled then Unraid stops writing to the physical drive. Hopefully the disabled drive had not completely failed and if that is the case then as suggested going the New Config route will result in UnRaid treating it as though it is good and will try to mount it. If this turns out not to be the case then come back detailing exactly what happens when you try this. Whatever you do, do NOT try to format a drive.
BTW: there was no need to do what you tried to wipe the parity disk. The parity disk contains no file system, and the sectors on it are meaningless unless one has access to the ‘good’ disks in the array so no chance of anyone working out your data.