[Users] Stuck disk

Hi, I appear to have 2 VMs that were in the process of being removed from my ovirt 3.1 system when the SPM role shifted to another node and it appears that the disks were removed from the iSCSI LVM Volume Group but oVirt seems to believe that it still exists. I can't remove these from the UI anymore as they fail and I am getting a log entry on the SPM node indicating that the disk cannot be found. Can someone give me an idea of how to remove these disks (I am assuming I will need to remove the records from the DB). Thanks in Advance, Jason Lawer