Mental/physical effects of carb deprivation?

So I lost 20 pounds eliminating processed foods and most carbs with the exception of fruit and low glycemic veggies. After about six weeks, and about the time I stepped up my fitness regimen, I noticed a change in my demeanor. I got REALLY moody. Then this past weekend, I physically couldnt stop myself from going on a carb binge. Every now and then I would allow myself something, but Id make sure it was just one serving. But saturday I polished off the better portion of some Garden of Eatin tortilla chips, peanuts, graham crackers, and some water crackers with jelly. All washed down with several cups of coffee. Then I felt normal again. I didnt feel that guilty, because I made sure it was nonfat stuff (as opposed to binging on something like pizza/chicken wings/etc). But I could swear it was unavoidable, I felt like my body really needed carbs, it was weird. Plus, I wasnt busy like during the week when Im working and can distract myself from thinking about food. Can your body take control of your mind at some point, and drive you to carbohydrates??