I regularly freeze mine yes, as I prefer not to have to cook evenings after work, so I batch bake at weekends. I've posted my recipe in the recipe thread now, with the correct proportions for four days (ie, in Cruise, 8 x tblspoons oatbran...) and I get 12 large ones out of that. I tend to keep two days in the fridge, then freeze the remainder.
You might also find it useful to start freezing leftovers in handy portion packs for lunches. I regular make large pots of this or that and portion up and freeze. Makes it easy then to grab a bag or two for lunch when busy...
I find this diet really easy PROVIDED I'm organised... even on a day when I've a lunch planned in a Dukan friendly restaurant, I still bring my own food in (and good job too as my lunch yesterday was cancelled, but I was fine with my food which would have kept until today otherwise anyway!)