I've been there plenty of times! I'm doing SW by myself so I don't have a group to go to, but I'm sure going to the group will help
The number-one thing I try to avoid is beating myself up about it, because that's a one-way ticket to endless comfort eating, and a terrible spiral which I know can go on for weeks, because food usually ends up being my main vice when I start losing control.
The sudden binge will have disturbed your blood sugar levels, and that fluctuation often causes you to want to eat more every time it drops, so that makes yet another vicious spiral, and the best way to nip that one in the bud is to have a day or two where you focus heavily on foods with low sugars, and without stuff like aspartame/saccharin (because those also wreak havok on your blood sugar, actually they're even worse than eating pure sugar) - so have a couple of days where you really try to pack in the superfree. Apples in particular are great at stabilising your blood sugar levels, so eat one for breakfast tomorrow, or maybe two.
The other thing I found is that the kinds of food you eat will have some effect on the kinds of foods you're craving. My old SW buddy (who did really well, much better than me) sent me this image about cravings, and it turned out to be a life-saver.
Honestly I find that the only way I can deal with recovering from a binge or an 'off week' is just to have a couple of detox days, where I make the effort to get outside with fresh air and exercise, eat loads of superfree, cut down on the syns, and then usually after that my head starts to get back into the game