Roll out pizza dough into a large rectangle.  Smear the margarine over the dough and then sprinkle evenly with brown sugar and cinnamon, leaving about 1" of dough on one of the long sides.  Starting on the long side that has sugar on it, roll the dough up into a log.  Slice the dough to make 9 rolls and place them in a 9x9 dish coated with cooking spray.  Place in a cold oven and then turn the oven on to 375.  Bake for 23-28 minutes or until golden brown.  Remove from oven.  Meanwhile, in a small bowl, place powdered sugar.  Add water, a teaspoon at a time, to sugar until a thin glaze.  Stir in vanilla. Pour the glaze over the rolls while still warm.