See, the thing is, in The Economist’s write-up on this ruling, there is nothing about “leaping sexily” (it’s not in the court ruling, either, thank goodness). That phrase, in fact, has nothing to do with anything. That is simply The Economist’s description of cheerleading. And we wonder why it gets no respect?
For more on why it’s ridiculous that cheerleading doesn’t count as a sport, see this post at Feministing.