Hello,
I wanted to know if it is possible to get a build or version of RadControls that does not emit Telerik in the page source when user's view the source code.
I do not think that you want skip your RadControls client initialization, do you? :) Otherwise they will not be usable on the client. Each ASP.NET AJAX controls uses $create on app add_init to initialize itself, so I strongly doubt your request can be fulfilled.