Scott realized that letting go of the medalion would not stop the change. He needed to take off the medalion so it would not touch him. Before he changed anymore, Scott grabbed the medailion with his left hand, swung it over both of his heads, and dropped it on his bed. "There," He said, "that should stop the change."
Unfortunately, he was right. Taking the medalion off did stop the transformation. He realized that he stopped it halfway through, and the transformation was not going to reverse itself. Scott now looked in horror and aww at his new body. From toes to heads, the new body had two legs, one vagina, one chest, two arms, two brests, and two heads. That's when the second head spoke up after realizing the same thing, "Way to go! Taking off the medallion stopped the transformation. If you just waited, we would have complely split into two women, now we are some kind of one and a half women.