I am quite sure that they are ramping up for another rotation. Problem is, I don't believe the President has an alternative but to use these two divisions. Or at least the 101. He might be able to leave 4th Mech out of it and simply make it a 101/2nd Marine Division operation. I don't see how he avoids using the 101, the 2nd, and possibly the 82nd in this situation. You simply have to flood the zone with Federal Troops. This is as much a political necessity as anything else. Registered voters will demand it. "America first!" and all that. You will, in short order, hear demands from Red State southern senators and congressmen for Federal Troops and assistance to help maintain order. These are Red States we're talking about here. Bush isn't stupid, and he didn't get to be President by being politically tone deaf.
He may get around part of the problem by asking other state governors to call up their Guard units for duty in NO for short-duration TOD's.
Be Seeing You,
Chris