Quote Originally Posted by kexodusc
I'm still thinking we're gonna see the real John Locke make a comeback appearance on the island and confront evil-Locke.
i read on another blog, from cnn, that one idea was Locke has been Smokey or "Smokey-infected" on the island for longer than we think. i.e. longer than since he took over since Ben killed Locke.

Kinda like how Sayid has been 'tainted' since being revived, so was Locke.