Hi Ben Boger,
ContainerBindnigs are only available for Silverlight. Their purpose is to workaround the missing Bindings in Style Setter. So you don't need them in WPF.
If you want to enable/disable RadMenuItems you could use ItemContainerStyle property and set the following setter:
Where IsMenuItemEnabled is a property on your data item.
We will update this article. Thanks for pointing it out.
the Telerik team
Registration for Q1 2011 What’s New Webinar Week is now open. Mark your calendar for the week starting March 21st and book your seat
for a walk through all the exciting stuff we ship with the new release!