I like the fact they still had issues with the game, like the fastest speed, and during that someone was sitting around making an ad in the game. That seems like a good idea. haha
Not at all unusual. The person(s) working on that DLC were likely allocated to it long before the game was actually released, and with something as large and complex as a game, you can't always pull someone off of one area to work on another without a productivity penalty. Besides that, most of the issues were due to exceeding the capacity of the servers set up for it--simply not a problem the game's programmers and artists are supposed to solve.