The saying one singular naughty slip/one bad day is going to do as much damage as one great/healthy day is going to make you miraculously loose weight just because you had a good day out of 7 is apt here. We all know its unfortunately easier to mindlessly pile on the pounds than to loose them, but as long as it isn't a regularly thing and you count the syns even if you went over and heard from it, I don't think there's much harm done. Although its also important that this doesn't activate a green light that its ok to always go over because.......