Being accountable totally helps me out. Just like my bread and wine night with my friends -- that was just the end of a really bad diet week, and I came on here to be all "WAH! THIS IS HARD! I MESSED UP! RJNDFSFSD!"
Once you admit it to yourself, get frustrated with yourself, and let yourself have it, you can get back on track. I have breakdowns about once every 10lbs. You get frustrated and tired and cranky about it and you just want to eat your cake and be done. But then you give yourself a good kick in the face, and allow the people on here to give you a good (but friendly!) kick in the face, and all is well again.
Keep on truckin'; this was a bump in the road, and you will get over it.