Given that Soundgarden has drums, bass, and guitars and that Kanye has flutes, whistles, scratches and moans, why the hell didn't Soundgarden break into one of their older, faster, and louder songs and just rise to the challenge? If you want to get the crowd on your side, take the opportunity to do something spontaneous and different. Believe me, if you make an effort to deal with adversity, they'll follow you there.
Instead of complaining and using an ill-considered reference to retarded children, Chris Cornell should have acted like a musician and dealt with the issue at hand. This is why I have never gotten on board with Soundgarden. They simply aren't a band worth following and no one knows when that thing will fall apart again.