Maybe you should try the Elmer's School Glue basting, for future quilts. It's easy and keeps everything nice and smooth.
Just a crazy idea but if the back of this one is really upsetting you, I would consider covering it with a blanket. Since the layers are already quilted, you could attach the blanket layer, with ties or tacking. It'll end up being a much warmer quilt but sometimes that's a good thing.
