We all do this sometimes. Even non-compulsive overeaters do this sometimes.
You have made INCREDIBLE progress, BTW.
Why did you inhale? Well, it could be for purely physical reasons: maybe you were just starving. Or it could be you just had a back-to-old-habits moment. Are you currently working on eating slowly/not reading, watching TV, etc. while eating and all that? If so, what I've personally found (thus far in my journey) is that there seem to be "fall back" periods where, ironically, just as you're making the *most* progress you have a momentary slip.
It's almost like the old habits are a defense mechanism or a safety net and we have to know we can still reach for them if we need them.
Your progress is amazing--you should be proud of yourself--I am proud of you just looking at those stats. You had one slip up; no biggie, who's perfect and who would want to be, anyway?
I'm disgusted with myself.
I hope you're feeling better now! 
You should be proud because it IS hard work!
