CANNOT remove Norton Backup Drive, appears to be hanging my computer - already disabled NortonBackup

My computer recently started hanging on "Save As" operations and on common diagnostics, like MMC-Disk Management.  At about the same time this behavior began, I also noticed for the first time a "Norton Backup Drive" listed as an attached device. 

 

I have disabled Norton Backup in Norton Security Suite, rebooted, and that drive device is still listed, and I still have the have the hang issues. 

 

I didn't authorize Norton to start running Backup, or to create a Backup Drive.  I'd like to know how that happened as well.

 

Thanks