Delete a Directory directly on the filer

Ontap is 8.1.4 7mode, volume and qtree are NTFS-Style, shared via CIFS. NFS is possible but actually not used.

On the shared qtree is a directory, which cannot be accessed - it isnt possible to gain the ownership nor any access-permissions.

So I want to delete the dir directly on the filer, which does not succed due the lack of a rd command or similar - what can I do?

Thanks in advance

Peter