Since it was in a vacuum packed cryo-bag, would it not lose a lot of it's vacuum if the meat was bad? (assuming there is no hole in the bag)
I was in discussion with a butcher last week concerning a butt with a hole in the bag (leaking vacuum), and he told me that they make country-style ribs out of those. Not sure what they do with other cuts of meat in a similar situation.
I've seen folks toss canned items after the due date expired, but as long as that vacuum is still there (no bulging top / bottom), the contents should be good.