It's never good to feel out of control with food, but I just wanted to say I seriously doubt that you really gained back however much weight you lost.
I'm not sure if it was plain tomato juice or V-8 or whatever, but Fitday estimates your total damage there as 660 calories. Binging isn't good, but those calories don't even add up to 1/5 of a lb.
Liquid is very heavy, though, and 12 cups of it probably weigh a few pounds. You might've been retaining some of that fluid, *especially* if the sodium count in the tomato juice was high. In other words, that higher number on the scale might be the juice itself -- *not* weight you gained back because of it alone.
Hope this helps reframe things a little -- keep going! Don't get discouraged.