Two things:
1. He is bitter that the Redskins will have 0 chance against the Seahawks in the playoffs. Seeing as we will be in the playoffs very frequently, he knows that Washington has no shot at a Super Bowl any time in the near future.
2. You want to know what is disrespectful? Not taking care of your own field and putting the safety of the PLAYERS in jeopardy on the field, the opponents as well as his own. RG3 could have been great but thanks to a lazy approach to field upkeep his career will be cut short because of having terrible knees thanks to that awful field.