This is a comment for Justin's poisting. It's too lengthy to be a comment, so I just put it as a new posting. Thank Justin for raising a good issue.
Let me clarify this issue by adding some more facts.
-South Korea agreed not to use National flag in Soccer match between two Koreas in 1990, Basketball match in 2003. However, it was not a national competition but friendly match.
-South and North Korea agreed to use the "unification" flag and Arirang when they are marching ‘together’ in the entrance parade in Olympic games (Sydney, Athen), Asian games (Pusan, Dohar) and so on. However, it is only for the entrance parade. When South or North Korea acquired some medal, they played National anthem and displayed national flag.
-South Korean government allowed North Korea to use North Korean national flag in 2002 Pusan Asian game, 2003 Taegue Summer Universiade, 2005 Eastasia Soccer in Taegue and so on. That means South Korea accepted North as an independent states. Why can’t North Korea do the same thing?
-If North Korea can’t allow South Korea’s national flag and anthem because they are still at war to each other, how could North Korea allow US national flag and national anthem on Feb 26 in New York Philharmonic’s performance?
-What I’m trying to say is that it’s not South Korea’s problem, but North Korea’s. And it is not South Korea but North Korea who is trying to make exception against FIFA rules. Two Korea’s are going to have game to each other, and not parading together. It is natural to use their national anthem and flag.
-I know that North Korea have some difficulties to acknowledging South Korea as an independent state, because South Korea had the same problem during the military government. At that time, South Koreans regarded North Korea as not a state but an illegal political entity that occupying ‘our territory’ temporarily. I think North Korea still maintaining this perspective.