Pre-engine or Post-engine scripts still appear on one or more domain controllers, even though they have been removed from the Manager Console (4298573)

Pre-engine or Post-engine scripts still appear on one or more domain controllers, even though they have been removed from the Manager Console

At times, a user loads in a .ps1, .kix or .vbs pre engine or post engine script on the Desktop Authority manager console. However after removing it, he may notice that the files don't get deleted from the domain controller directory where the files are uploaded to. He may be able to delete them manually, but the next time a save or a replication is done in desktop authority, the files are back again. How can he permanently get rid of these files when they are not in use anymore?