tokim, not to be rude, but the past matches were kinda suspect even if you lost against Germany. Yesterday it was the first time that I've seen a referee giving a yellow card to a Korean player, while during Korean matches I've seen a lot of red and yellow cards to other players, even if they were not guilty
JC, maybe in England people were not so interested, but I can assure you people from many other European countries are still very angry for the bad mistakes that happened towards their teams. And adding to this, let's say that no team during this WC played a good football. Nobody, including South Korea, or even Brazil. Nobody, including Germany that is now in the finals to win the Cup. That's why I'm not that interested anymore in it.
Coming back to the match Germany-South Korea:
Maybe it was that is obvious that a Swiss referee, being half-german (in case you didn't think about it, but in Switzerland people are actually mainly german), preferred to not take any decisions against Germany, and I found it odd that during other matches they said several times "You can't have a referee from a certain country" (like europeans for Spain and Italy) and then all of a sudden they let Germany have a Swiss referee. Maybe Germany decided to do something before the match and asked for a "serious" referee.
Those are all possibilities, but you can deny that South Korea's WC was the worst ever regarding officiating of referees and linesmen.