Is there any way that I can use an existing set of user controls as my pages collection of a panel manager?  I see where you can add an existing PanelManagerPage, but this only allows you to add pages that are already included in another PanelManager right?  Is there any way I can add a page as an existing user control??

Can you explain a little more what you mean by untranslate?  Is this basically just removing the links that you have set up by the translator? 

Yes, untranslate replaces the "translated" business object instance with the original instance... though, as I look through the code, it doesn't look like anything that we use gets untranslated... because we just wait for the containers to be disposed.  So, I would just stick with the first overload that accepts the actual business object instances you want to translate.