Board Thread:False Info and Speculative Discussion/@comment-25841096-20160313094543/@comment-25123326-20160313100019

Derek lied to Scott. There isn't a cure, at least not one that we know of yet. Unfortunately, at that specific point, Scott was a means to an end for Derek. All he wanted was revenge on the alpha that killed his sister and needed Scott's help in doing it.

A true alpha can only have their alpha spark taken by one of his or her betas. So, Hayden and Liam both technically could take his spark. If a werewolf outside his pack were to kill him, they wouldn't become an alpha.