He wasnt fully recovered after the AZ game. He got by in the SD game cuz he wasnt hit very hard.just a few decent hits caused the concussion stuff to return..thats why the play level didnt go down for a game or 2.
-Now every single time he gets a hard knock he is going to get another concussion.
He needs to either retire or take 1-2 years off to allow his brain to heal. THEN maybe he can start again and learn to be a QB.
Of course the concussion isnt the excuse for everything. There are the issues of having a terrible coach ...and never developing at all from late 07/early 08.