What I've heard are rumors that someone in Aerosmith or their entourage got caught using cocaine in the bathroom at NASA while taking a personal tour. No charges were filed and reportedly some NASA employees were not happy that they got a pass on this.
This city whored itself out (the nightly broadcasts of "stargazing" were a particular example). Queen Sheila represents a district in Houston and I think that it is in this mindset that she wanted it "on record" that Houston's Super Bowl was "the best". The "best" part about it was that it was a close game until the end; kept things interesting. The host city had no role in that.
The downtown business partnership has been selling the city on hosting the Super Bowl for years now. They opened the Metrorail down Main Street less than a month before the big game (and have been averaging an accident a week in the trial and operating period). Being "the best" is supposed to justify some of the expense that Houston shelled out.