Washerwoman, I too found both leaving the baby and then only Harry remaining to sort things out a bit odd.
The baby thing mainly because they have been more than a little precious about protecting him so leaving him with a friend and a nanny for several days seems out of character, the other because I would have thought they both needed to have some input at meetings.
I am not implying that I really know their character, just what they have chosen to project.
Regarding their "new direction" - that is obviously between them, but I do think it would be easier to give up the whole royal thing and be Mr and Mrs. That way they would eventually become naturally much lower profile and live something closer to an "ordinary" life.