Mix dry ingredients (except sugars). Finely grate lemon peel and stir it in. Squeeze the lemons juice into a small bowl, mix with powdered sugar, and set aside (this is the glaze). Beat margarine and brown sugar together, add egg replacers, and add flour and soy milk. Add vanilla and mix well. Pour into a greased loaf pan and bake at 350 degrees for an hour. Let cool for at least 20 minutes, turn out onto a cooling rack, and drizzle with glaze.