I'm sorry, but you are disconnecting during a 3 inning game vs CPU?
I think you are saying that you are being disconnected from the servers post game in mini season.
One thing that you must remember is that even though it's a vs CPU mode, it's still online as your stats, progress etc are being sent to the SDS data servers during the game. My guess is that you are playing on WiFi, and somehow losing connection during the game and getting it back. When the game is ended, you have conflicts in data being sent, the game summary then dumps and you are booted.
Just a guess here. I'm not trying to troll or tell you to get off AOL internet.