Oh, to be a TIFF volunteer with nothing to lose. Did Madonna demand that volunteers turn away from her as she left her press conference or did she not?
Were it the former, Clay would no doubt make every attempt to meet the Material Girl. You know, just to piss her off. Apparently it's quite easy to do.
The only explanation I can think of is that Madonna is actually a Gorgon and she was looking out for the volunteers' own safety.