Board Thread:Show-Related Questions and Answers/@comment-26967699-20150907211835/@comment-4839682-20150909000208

Do you know what a coincidence is? That's what it is, Gold even says it at one point. Thats the way the writers chose to write it.

Henry was not fully under the Curse. He was affected by it, nut not completely. I don't see any mystery about him being able to come and go through Storybrooke.