We have all been in your shoes many, many times. Please don't beat yourself up over the binge. It won't change anything. My suggestion is to tell yourself exactly what you would tell your best friend if she had binged. You wouldn't condemn and criticize her, you would support and encourage her. You did nothing "wrong." You didn't kill someone or hurt anyone. You didn't do something illegal or immoral. You simply ate too much. Your attitude of getting back OP now, is WONDERFUL!!!! That is exactly what to do. You fell off the horse and now you are getting back on. Simple as that. No need to make a mountain out of a mole hill. This was a little detour in your WW journey and now you are back on the road. More power to you for fessing up and moving on. We have all been there and done that and I know how guilty you feel. I have beaten myself up many times, but the fact is, it didn't change a thing. It just made me feel worse about myself.
So dust yourself off and welcome back. You will be just fine.