Spark People is not your mommy. You are not going to get sent to your room if you eat too much. And eating too much on a single weekend does not mean you are Bad Bad Bad.
You took a weekend off. No big deal. What you do on one or two days is not important. What you do in the long term is. So in the course of a year, if you hit your calorie goals and workout goals 95% of the time you will be so much healthier than you would have been otherwise. So get out there. Work a little harder for a couple of days.