"delete the RAID pair' and would still be able to use just the '0' drive,"
There it is. No manual will save us now. It's not unlike us deleting a partition from a drive. We deleted the RAID so unless ZERO ASSUMPTION RECOVERY (google these) or GETDATABACK can help I have to suggest the drive be sent to http://www.drivesavers.com for recovery.
Sorry to read about your loss.