You are missing the difference between Sitefinity's
controls and other AJAX
1. Our controls has embedded resources that you can disable as I described you. This disables only the embedded resources that are loaded only by our - Sitefinity's controls. There are minimum scripts that are loaded if the control requires them and you cannot disable these resources, otherwise this control will not work properly
2. RadControls for ASP.NET AJAX ( or other AJAX) controls have their own scripts which comes from Telerik.Web.UI.dll and these are again embedded resources.
The property you are setting - EnableEmbeddedBaseStylesheet is valid and exists only for the RadControls or our controls that wraps a RadControl and this property has been exposed by the control designer because it is a public property.
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