Doug ,
Another thought is to ask yourself why the inside wheel was spinning uncontrollably . Ive seen it a few times that a car badly set up on coilovers becomes light on the inside wheel , this allows the wheel to spin and subsequently cooks the diff ! Ive had this happen to me on one occasion ! Its usually the talk of the paddock that "it lights the back wheels up " and its not the power its just a poor set up .
Corner weight time me-thinks