Board Thread:Character Discussion/@comment-3563804-20141028001633/@comment-24936039-20141028221913

Also note that it was not a Genie wish (his own wish to never leave Regina's side before the first dark curse) that trapped Sydney into a mirror the second time, but Regina's magic (which was apparently broken by Ingrid/Snow Queen). And as others commented, I think Regina's ties to Robin did not sit well with Sydney as well as Regina putting him back into a mirror... Sydney may be a weasel, but he's not stupid.