I didn't bother reading the thread either. Just figured that I would let you know that you are all wrong.
Guys are cheerleaders. Nobody calls them out on it for a number of reasons. Probably the biggest reason is that they get more love with their chosen gender than the guys who try to insult them. Nobody cares if they're being called a friend if their loving the brains out of every guy from here to New Jersey. Or girls. They do that too. This same argument actually goes for the guys who play face characters at Disney. They also get all the guys. And girls too, but according to a Disney princess, most of them are actually gay, so that doesn't happen very often. All though almost none of this love occurs between people on the team, because that's against the rules. Instead, everybody else has love with them because they're all really attractive and athletic. If this is the case at your school, it's either because you're not at a university or college, or your high school is some conservative backwater.
Now, addressing the main post, it's strange that Michigan decided to rule this way. Guys have always been on cheerleading teams. In fact, girls love having guys, especially really light ones, on the team, because they get more points for throwing them up in the air and catching them.
Also, for all of you misogynistic idiots posting in this thread: you are a moron. Rich, white men have all of the power, and always have. Male privilege is alive and well in the world, and women need all the help they can get. I can sort of understand why the Sports Association disqualified the team. They were trying to protect the dominance of women in one of the few fields where they can actually succeed.
If guys were allowed to compete on female teams, how long would it take for a girl's team to consist solely of guys? We only have a girls' volleyball team at my high school, but the male students there took volleyball very seriously, and we probably could have had a guys' team for them. In fact, there were a number of guys who were even better than some of the girls on the team, and there were quite a few more who, with the same training the girls had had, might have been just as good. If they had been allowed to play on the team, they would have been denying a girl the same chance to play on the team. Now, it isn't necessarily right to say that guys shouldn't have that chance either simply because they have many more chances to succeed later in life in the same areas, but sadly that is the best we can do, aside from offering equal opportunities for everyone.