Board Thread:Character Discussion/@comment-5281989-20140513191307/@comment-24674051-20141007132914

The main problem with that explanation that I see is that the shoes are with Dorothy. After Dorothy "defeated" Zelena, Glinda gave the shoes to Dorothy so she could get home. And I would imagine that is where they are still.

Also, from the description that Regina gave, it wasn't just breaking the curse, it actually BUILT a wall (or some similar barrier) to prevent future travel (short of another curse). Remember that Bae was able to get to the LWM with a bean back in the day,so it was possible originally.

Which brings us back to the question... how did Zelena pull off the seemingly impossible. THAT is a big plot hole that needs to be filled.