If you can do a scan, and it shows the filename, then you can delete it, but, since it is not in the current IDB, not much else
By the way, just my opinion, but, you really need to be backing up the IDB to tape daily in its own backup specifcation, and I woudl suggest, using its own media pool, with the media in a known slot . Even if you just have a stand-alone tape drive, that would be enough