Apparently Tressel spoke at some kind of OSU Engineering thing today, and this was the story I got from a friend who was there:
"He came out for the speech, sat and breathed heavily for two minutes -- and puked on the floor. Then he said that the OSU vs Michigan game made him throw up."
I guess after that, he went on to deliver a good 45 minute speech. Pretty awesome. Again, I wasn't there, that was just what I was told. It was some kind of engineering conference. I'm pretty sure itw as at OSU given the context of the conversation, but I don't know for sure. I was told it was food poisoning.