What??
GT signed a BUSINESS contract with Apple. Apple has no obligation or "moral" reason not to hold them to their agreement. How is Apple being a bully? They loaned GT half a billion dollars, and since this story broke, Apple has said that at this time, they are not looking for the repayment of their loan. So where does "bully" and "arrogant" come in?
Having been in these agreements with larger companies before, all I can say is that just because there was an agreement does not mean that Apple followed it. In fact, it is quite common for the Big Dog just to do what they like, regardless of the agreement. Not saying it happen in this case, because we don't know the facts. What do we know? We know one or the other of them, wanted out.
Eventually we might learn why? If it was Apple, then Apple will just buy their way out of the situation and we may never know. That's just what Big Dogs do. If it was GT, then Apple will probably dump on them and we'll know exactly what they did or did not do.