Of course exactly what is heard on that clip is up to interpretation, but I think what is clear to me is something happened right after he said ok, because the cockpit goes from quiet to cacophony right after he finishes the word. I anxiously await the CVR transcript. So sorry to all those involved, crappy day for aviation that's for sure.
Doesn't the 767 have a stick shaker? If I remember right, they are awfully loud, and sound similar to what I hear on the tape there.