The broken line of ash and the fact that Illiana and Brom said that Jacob had not been in the shack in a long time totally rewrites all of our understanding of what has gone on in recent seasons. Ben took Locke to visit smokey when he thought he was visiting Jacob, that much is now clear to me.
I guess that when Hurley saw Christian and Claire together in the shack, he was seeing Claire with smokey. All the times Locke and Ben felt guided by various spirits or whatever, they were being manipulated by smokey. And, obviously, smokey = Flocke = man in black.
I have to question why Richard was not able to see what was going on and stop it. When Ben took Locke to visit the shack, Richard should have been said, "ummmm, where are you going?" And why was Richard even hanging out with The Others and Ben when there appears to have been a whole different community of Others living at The Temple and listening to the Japanese-speaking leader? Strange.
I think the producers have said that we are not going to see any more flashbacks or flashforward this season-- only "flash sideways" which is what they call the alternate timeline. I understand why no flashforward, that would simply not make sense at this point. But, I hope we do get a few flashbacks to see Richard's history and perhaps better explain a bit of what has been going on with The Others over the years.
--Jason "Is it Tuesday yet?" Evans