I really think Sawyer has a plan, so he wasn't really leaving the island/Hurley/those who trust him behind.

That bit about Locke taking over the Others made me go "huh?" too. I guess I'm getting used to things not making sense though because I didn't go back and think about it more. Locke and Richard could be in 2010, and the three years ago was 2007? But then Benry and Sun were there...yeah, I don't even know.