I am not sure how the Emmitt/Cowboys thing ended, don't really care, but I think that Jerry and the coaching staff realized that his best days were over and that he finally got the record with the Star on his helmet, and that it was not in the best interest, both for financial reason and for the team. He lost a few steps, and the team let him go.
Now the thing with BF, he still has the ability to take games over, and well if I am the Packers, and I have BF signed, well regardless, he is under contract. Retire or deal with the fact you will be #2. Now if a good trade comes along so I can build my team for the future, sure, we'll let ya go.
Gary, that was a good point you brought up, they could do that for BF, but when he still has game left, you not only lose a solid QB, but to get nothing in return, well then you sell the team short on that. They both owe each other, and well, the end result is...................