I think if there's one obvious fact about this whole thread it's that there are many of us in the same boat. Unfortunately the simple answer is one that most will not want to accept and will stubbornly attempt another way. These kind of uncontrollable binges are more than simple self-control issues. Long term extreme dieting wrecks havoc on our metabolism and hormones and will inevitabley lead to this kind of situation. It may take some longer than other but it will eventually happen.
The lesson learned should be that extreme dieting is not the answer. Sure you may get quick results, but at what ultimate price? I'm not sure about you guys but I'd rather diet in a more moderate manner and keep my sanity and normal eating habits than to suffer miserably through a rediculous dieting scheme to reach a bodyfat level that will only last until the body decides it's time to eat again. This type of dieting is the perfect setup for weight gain. By the time you reach your desired bodfat level your metabolism is so slowed down and leptin levels so low that your body is primed for fat gain. The instant you decide you want to "eat" it will be hard to stop. And all that binging puts on weight faster than ever due to your surpressed metabolism.
This is one of the reasons that refeeds offer a unique advantage. My old dieting scheme was very similar to Crunch's. I'd eat perfect all week long and then eat what I wanted on Sunday's. I'd often eat till I felt sick, but it ultimately worked. I always kept losing weight throughout this method and I absolutely loved Sunday's. However over the long term the 6 days of extreme dieting caught up and it was harder and harder to to control my eating. At first I thought my will power was fading, but in reality it was simply my body deciding it had enough of this dieting method and started to fight back.
The best thing I could do was to start doing more regular refeeds, and controlled ones at that. I actually planned out how many calories and carbs I was going to ingest on these days so that I wouldn't go overboard. Even though I wasn't binging per say, the regularness of the refeeds kept my urge to binge at bay. I'd recommend for anyone with these uncontrollable urges to binge to simply refeed more often, but plan them perfectly and count calories. Right now I am refeeding on Wednesdays and Saturdays. On Wednesdays I simply diet during the day then after my evening workout I begin my refeed and continue until bed. On Saturdays I refeed all day but again it is planned and I treat it just like a diet day. I allow myself one "cheat meal" where I just eat what I want without worrying, usually I'm out to dinner eating whatever I choose.
Crunch I wish you the best but I don't think just going back to your old dieting ways is the answer. That is what got you into this predicament in the first place. I'd recommend easing into a diet and not rushing it. You'd be amazed at how fast the weight comes off with a well planned diet while taking leptin into consideration. A couple of years ago I'd never have believed that with 2 refeeds a week I could even lose weight but it's falling off as fast as ever, not to mention that I don't feel like I'm suffering. I'm never more than 3 days away from eating something forbidden which makes it much easier to get through the diet days.
One more thing, I ran your numbers Crunch and at your weight I think 1700 calories is a bit low. That's a huge deficit and will no doubt lead to a surpressed metabolism and low leptin levels. One binge day a week isn't enough to fix these issues.