After 4 years of being mostly in control of what and how I eat, I still get like this time to time. I just did it today on a smaller (when compared to the old me) scale: Went downstairs to let the dog out and while waiting for her to do her biziness, I popped open the crisper where the Cool Whip is HIDDEN and began to scarf down 1/4 the container in addition to a couple of 3 musketeers minis and fig newtons.

That's like 400 empty calories that I'll have to weed out later
In your case, you've shown that you can be sucessful at dieting already. I don't blame you one bit for going "wacky insane crazy" with what you ate with your pregnancy. Yeah I know that the doctors say you only need to eat and gain so much, but you had a human growing inside of you! Talk about messin' around with your hormones and dieting schedule!
Basically it seems that you're back to your old, old habits (before your 80 lbs loss) and having trouble curbing them again. Maybe you do really have a psychological addiction to food (I seriously think that I do) in which case you could always go to a doctor and try to get it sorted out legitimately. I'd also investigate, if I were you, whether or not any of your over-eating could be caused by your post-partum situation. There are a lot of crazy changes that take hold in your chemistry during pregnancy and some keep hold for a long time after. I'm setting up to quit smoking soon

and I read that doctors are now prescribing, with pretty good results, medications like Welbutrin and Zoloft as cessation aids. These have a tendency to curb obsessive compulsive "nagging" thoughts and have helped a lot of people quit. Personally I'm more the tough-love, cold-turkey type--and I just don't want to take anything that messes with my brain--so I'm going to go it alone. But if you would talk to a doctor about your situation, I'd ask about that as well.
So how do you fake it until you make it?

What I did to help control my constant binge eating was to just focus myself on foods that would barely impact my waistline. When I first started dieting, I would keep a hefty supply of things on hand that I could "eat as much of as I wanted". And when I started to feel "the need", couldn't stand it anymore, and found myself standing in the kitchen ready to consume anything and everything in sight, I would gorge myself on something healthy. Cut-up raw broccoli and low fat dressing. Steamed brussel sprouts and maybe fish. Fresh tomatoes. Bowls of canned green beans or stewed tomatoes. And I'm not saying that I would eat a snack of these, I would eat bowl after bowl of them until I was
stuffed. I found that it didn't matter
what I was eating,
just that I was eating. It's disturbing to think that I really needed to eat that badly, but I did--and once I had finally stuffed myself to the point of discomfort, at least I felt some relieve from my thoughts of food. I obviously can't say that this would work for you, but maybe if you can channel your eating urges towards low calories foods, the binges won't hurt so badly.
Over time I've managed to eliminate most of my obsession with food as well as these types of behavior. With your previous dieting sucess I bet you'll do the same. Having a baby is a huge change and stressor. I think you've coped well to not have gained back all of the weight you lost! I hope you get some better advice than mine. I haven't been in your exact situation so all I can do is offer up what I've learned in my own.
Best of luck and welcome to the forums!