Wilson had like a finger injury last year, which I think is one of the reasons why Denver was ignoring his struggles then. Then the news came out several weeks ago that he is playing while hurt. Plus the fact that other players couldn't stay on the field. Denver's been plagued with injuries. Plus the fact that the decisions from Hackett was questionable. They hired Rosburg during the season to help with clock management strategy because they kept getting "delay of game" penalties.
With how much Russell Wilson is getting paid they really have to go with him another year and hope that he is fixable. I have been a fan of him since his rookie year (I won in a fantasy league with him in his first or second year) but I am not so sure either that he has anything left. All of that time of him running for his life in Seattle may have used him up.