Hi kalijack!
Yes I've experienced binge eating disorder- and big-time! You're not alone in this.
I gathered from your posts that you have an extensive diet history. So did I- in fact I am POSITIVE that my bingeing disorder was brought on by dieting. I went on an endless cycle of diet-binge, diet-binge. I considered OA, but the religiousness of it put me off as well- plus, I thought abstinence was really no different than the diets I was already trying to adhere to. But it seems to work well for others here...
I recommend you look into Intuitive eating- there's a thread about it in the "General diet plans" section. Basically it's an anti-diet: it asks you to trust the wisdom of your body to know what to eat and when you've had enough of it. I started out with Geneen Roth's books, and at first I thought: no way, maybe some other people can do intuitive eating, but I can't, I'm broken, I just go nuts around food! But I kept coming back to them and the message started to sink in, and now I can say I'm binge-free.
It didn't happen that quickly, but the peace I have now was well worth the years of effort.
When you say you eat healthitly during the day, how many calories do you consume? It's very possible you're under eating during the day and overcompensating at night.
Good luck in your efforts!
p.s. I don't work for Geneen Roth, although maybe I should considering the amount of times I recommend her books.