If the NCAA would have known about this money he wouldn't have been eligilble to recieve these awards or play in the NC game. So he certainly wouldn't have won the Heisman, but no one can say USC wouldn't have won the NC. Probably unlikely that they wouldn't have though.
I see. Well, I guess that puts me in the camp of those who think his Heisman should be taken away, but that USC should retain its national titles.