Posse photo by Jim Rossman Posse member Irwin Thompson alerted us to a remodel at the Baby Back Shak, a longtime Posse favorite joint. We've always loved the ribs and boudin, along with the turkey and even the Shak beans, but the building, which was totally void of windows, was always very dark and the decor was mid-70s with faded sports photos on the walls. The way a place looks has never stopped us from enjoying Clarence Cohens great food, but I have to say, the changes -- especially the new front door and wall of windows -- makes a…