Yes, but the mushroom also leaves quite a bit of area exposed for "lift". To me, the 'Dome looks like a hemisphere with a sharp edge halfway up. I really don't see anything for the wind to lift on. But like I said, I'm not nearly qualified to be taken literally or seriously =D
What concerns me is how overconfident officals have been in descibing the Superdome, using the same supurlatives that were used about the "unsinkable" Titanic.
Pray that it does not become a giant death crater.
Low pressure on the leward side causes lift.