I think that Emma will have to come back before it is fixable and Rumpel has to find Bae. They still need to keep a deterrent to keep everyone in town, so i imagine even if it is fixable it will just happen again if you try and leave town so that will continue to keep people in town. They always had to do something to stop people from leaving what with Regina with magic and Rumpel hanging around being crazy. Not to mention the pirates and ghosts and whatever is going on in the next episodes.
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