Alternative ways to seal the bore.

[Zorlon]

Look, the Chapion of Light accidentally crossing streams of BF with the Shadow's top guy is so contrived and unlikely an event I just cant imagine it managing to occur in every 3rd Age of the Wheel's spinning. 

 

What else can you imagine might have been done to fix things, be it either some other way of using the TP or a completely different method of closing the hole in reality?