I had a few weeks (as you can see from my sig...) where I kept gaining and maintaining even though I was following the plan 100% - Hexs, syns, the works. My C suggested that it could be that I was being too good - most of my meals were made up of oodles of superfree food so I was full, but full of high density/low calorie foods, and so my body may have still gone into 'starvation mode' because my calorie intake was so low, despite eating so much.
I didn't buy into it to be honest, and the following week I went a bit off-plan as I was a bit disheartened with the whole thing. And funnily enough, the following week I had a loss.
Still not sure if I believe that you can have too much superfree, or if it was just the relaxation about it on my part which led to a loss. Made me wonder though!!