Extension Manager Disable or Remove

In the Extension Manager using windows 7 and v3.5.0rc3 Libreoffice Impress, how is one to disable or remove an extension. I see instructions for Linux users but no Windows way and no option in the extension manager.

The only way to uninstall an extension under Windows (that shows a Lock on the top right corner of Extension Manager) is to Exit LibreOffice and go to the Control Panel’s Add or Remove Programs.

There select LibreOffice 3.5 and choose Change. The LibreOffice installer shows up. Click Next on the first screen and then on Modify and Next. On the Customized Instalation dialog, scroll down to Optional Components, Extensions and click on the + sign to left of Extensions to expand the list. Click on the icon to the left of each Extension you wish to remove and select from the menu “This option will not be available”.
Proceed with next and all unwanted extensions should be removed on the next LO run.

I found presenter-screen in the C:\Program Files (x86)\LibreOffice 3.5\share\extensions and just deleted it and that seemed to work.