And so it was done.
Apparently, the Eastern Witch in all her evil knowledge had learned of The Muppets and their plight to save Oz from her tyrannical rule, and knew that the only way to stop them was to dispose of them.
Having done so, in a land where no one really dies, the Eastern Witch put a spell on the road before the Muppets arrived there, and had the earth swallow them up where they would vanish from Oz and end up back at their home, and the Eastern Witch's rule over the once beautiful and magical land of Oz would lay waste to those dreams and fantasies that we all have of going somewhere over the rainbow...and now, into the nightmarish Land of the Eastern Witch.
So ends this story of the plights of the Muppets in Oz.
THE END.