Sourdough Attempt in Breadmaker I

I found some recipe online for the sourdough in breadmaker.  In the first knead, it looked nice, and even has signs of having slightly risen.  So I diverged from the recipe, and added a little kick of fast acting yeast to it, it turned slushy again.  So I just set it to bake, and I was expecting the worst.  The bread turned out to be edible, albeit very unevenly risen.  When on a second thought, would it be the super duper Canadian Strong flour?