Oh, boy, Jen - I'm sure they were at least tasty.

Obviously, I can't be of much help when I'm drooling over the idea of a dozen cookies, but I can give it a shot... Do you plan your food everyday? I personally don't do this normally, but when I just can't seem to get into gear, I sit down the night before and plan everything that is going into my mouth and when for the next day. If I've got this schedule (usually I only do this for a day or two, to get my mind back into gear, I'm just too busy for this kind of planning) I find it easier to say no - it's not on the list, I don't get to eat it. As far as food obsession goes, I imagine that most of us here ARE obsessed with food (what we put into our mouths, weighing eat option, the cost of eating this now kind of thoughts that I know I have every single day), but there really is such a thing as a healthy obsession - as long as it stays positive. It sounds like you're feeling like it's definately NOT a positive right now, and I think the cookies are just one way of making that more obvious to you.
I honestly don't know exactly what to tell you. Maybe take a couple of days "off" of dieting per se, and by this I mean eat as though you were in maintenence, because you soon will be and it's something that you're going to have to deal with forever if you want to stay where you are (and I know you do). And of course, keep exercising - that's key. Do your best to stop thinking about food, about carbs, calories, fat... just try to enjoy food in a reasonable way as you might imagine other "normal" people do.
I know Holly attends OA meetings - maybe that's something that might fit you? She'd definately be the person to ask. Or maybe TOPS or some kind of eating issues support group where you can share with others face-to-face your attitudes toward food.