NetApp support reopened my case and spent some time and finally a work around to get access to data in the snapvault volume was found.
OnCommand System Manager 3.1 w/ DataONTAP 8.2 Clustered P3 leaves a busy snapshot on disconnection. The busy snapshot cannot be deleted because the DP volume is read only and the volume cannot be made read/write because there is a busy snapshot.
Attempting to work with clones or snapshots in OnCommand System Manager had grayed out menus.
At the CLI in privilege diagnostic commands were tested.
volume snapshot remove-owner –vserver <vserver name> -volume <volume name> -snapshot <snapshot name> -owner <owner>
Did not work because the volume was RO.
volume snapshot restore-file –vserver <vserver name> -volume <volume name> -snapshot <snapshot name> -path <path to file*> -restore-path <restore path**>
Did not work because the volume was RO even if the restore path was a RW volume.
volume clone create -vserver <vserver name> -flexclone <clone volume name> -parent-volume <volume name> -parent-snapshot <snapshot name> -type RW
This is the only way that worked. I have now begun dumping snapshots to tape.