You can do this by setting the content of the TransitionControl to null and after a while to set it back to the needed content. You should notice that when you change the content of the TransitionControl it doesn't wait for the animation to finish, but cancels it and starts the new animation immediately.
All the best,
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!