Looking at your journal you reported going way off plan less then a week ago. In the book Atkins states a cheat can set you back that long or longer.

Do you use fitday? Now that you are closer to goal you may have to start watching your calories somewhat, it could also be a case of carb creep and fitday can help. I know it's a pain, but using it just for a week might make things springout at you. It could also be sodium intake and water retention, drinking more water and perhaps some green tea may help with that. I would also get your body fat measured. That way you can be sure when you are losing fat and when you are gaining muscle. You might be trying to get a body fat that's too low. Go by your measurments, not just a height weight chart.