Lyon was well out of position when the Brits got the first try, but when he had the ball he did nothing wrong. He did well to get the ball to Tate a few times, he was shifted from one side of the field to the other at least once during the Test, as mentioned he did save Australia from a few difficult situations, and I would still say that he was too quiet today. Australia didn't lose the Test because of Lyon. Hornby, Tate, Thaiday (not enough minutes), Gas (same problem) were all far more at fault - not to mention Ricky Stuart.
Lyon had an ordinary game, but was far from a disgrace. Looks like Gas will be out of action for a bit, so Lyon should hold his position as Hodges comes back into the side. Tate = gone, King = back as well as Hornby = gone (or at best, bench) and Thurston = back should be the only backline changes.