Before changing the content of the RadTransitionControl you will have to change the Transition effect. You can use:
<telerik:RollTransition IsRollOut="True" />
to reverse the animation.
You can implement navigation that will check what is the target page and if it is the homepage it should set a roll transition with IsRollOut="True". If it is navigating to somewhat other page - IsRollOut="False". I am not sure it is worth the effort though.
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