Board Thread:Show-Related Questions and Answers/@comment-34924658-20151201030540/@comment-6175354-20151207161856

Eskaver wrote: Look at your statement and make sense of it. I'm perplexed by the whole Rumple thing because it literally made no sense.

Actually why did Emma even turn back to normal? All Gold did was become the sole vessel of the Darkness. Which is why Emma returned to normal, and Hook's neck wound  reemerged. The Dark One draws its power from the dagger, which is the tip of Excalibur. If the dagger reappeared, then it is logical that Excalibur did too.