In reviewing game video there appeared to be two seconds on the clock at the end of the fourth down play.
To have ended the game with time remaining would not have fit the character of Mike Carey. Take a look at this
http://www.nfl.com/videos?videoId=09000d5d80678c74 then think about it.
I have to say Mike Carey embodies the character and precision that each of us should carry every time we step on the field.