The Rams understand they have about a 3 year window to win the Superbowl (it's one reason they made the huge move for Stafford). After that AD will likely loose some of his great edge. And then a new contract will come up and it'll be a giant decision on whether to pay him perhaps as much as $40 mil per year to keep a 33 or 34 year old DT (probably not).

But the GB game wasn't all about Donald's injury. The O was ragged as well. Again, this is why you saw the Rams go get Stafford plus add outside and inside speed skill players that can be difficult match ups.