If they are in the User's Word Startup Folder, they will be loaded when Word is started. They can easily unload them. Why do that, though, unless they conflict or otherwise cause problems?

You could have an AutoExec procedure that launches the templates dialog so that they can uncheck them when they start Word. You could even attach that procedure to a keyboard shortcut and/or QAT icon to let the user launch it at any time to make changes.