I'd check the plateau busting idea's. If the plateau lasts, I'd suggest looking over the Wendie plan and considering that. Also up your protein as you are exercising. Protein feeds those muscles and that signals to them to increase. I try to eat some protein right after my workout. I'll eat beans, oatmeal filled with flaxmeal and oat bran...
Also, at times your body needs to adjust itself. Plateau's are normal occurences. We don't lose everything at once. One of the ideas in the busting area was to view this as practice maintenance. It's awesome that you haven't gained anything in 2 weeks! That really means you're working hard! Just keep trudging through.
The measurements are a good idea. Your body may just be moving things around.
In the end, don't binge.. That just defeats your last 2 weeks of self-control and everything you've done already. You'll get there! Just don't let the urge do you in! You can do it!!
CHS: I also have the wii fit. Just got that about 1 week ago. I absolutely LOVE IT!! What do you think of the fitness coach? I saw that at a store, but wasn't too sure and thought you needed the fit for it, which I didn't have at the time.