I am confused. Do you have five copies of your database or ten? Ten if way too many. I would stick with two or three.
You can use Amazing Utilities to move your SQL databases to the D: drive. It's fairly straightforward, but I would make sure you are completely backed up.
Is there any reason, you can't just uninstall AC, and install it to the D: drive? There is no law that says you have to install to C:\Program Files.
Finally, I am not sure how this is happening in the middle of a Monday. Your previous backup should have been Friday (I hope not the weekend). Therefore, you know at the beginning of the day to check how many are there.
Why does it take a long time to fix the problem. No one even needs to know you are doing it. You can be in room 1, remote to the server, and open the BACKUP folder and delete any or all. Or just map that folder to your computers, and delete in what....10 seconds?
