Well, the SNBH episode put a big damper on some of my theories:

That the flashforwards we saw were in descending chronological order.
That Danielle was still alive and would take out Keamy (this season), and maybe Ben by the end.
That Claire would never leave Aaron unless it was by force.So, it's time to retrench and see where we are.

I would agree with the first two points, but we didn't see where claire went to and why she left, so I don't think it can be ruled out that it was by force

Claire MUST'VE had a great reason for leaving Aaron, maybe she was hypnotized (sp?) or somethig?

Maybe the island told her that it couldnt stop Jack from leaving, even though it wanted everyone to stay forever, so this (leaving her baby for Sawyer to find and give to Kate & Jack) was the only way to get him to one day in the far far future to want to return (because it not being their baby was the start of his descent, recall the note from Charlies ghost...)


i dunno that's probably too far fetched even for the timeshift/vortex fans to believe .