You could achieve the desired functionality with an attached behavior: declare an attached property in some class in your application that when set on a button will attach Click event handler and execute the code you need. The xaml would be something like this:
<Button ... local:MyClickBehavior.IsEnabled="true" />
in the property changed callback of the IsEnabled property you will have a reference to the button and will be able to manipulate it like you wish.
the Telerik team