I can see the IRS trying to find the guy who donated the ticket and taxing him for 1/3 of the money anyways. They'll claim he was the original owner or something.
I don't think so. He never collected it. The Foodbank will collect it. As far as the lottery goes, I don't think they ever check to make sure it's the oginal buyer who collects. Whoever collects, collects. That's why there are always these stories about people who say they dropped a ticket, or lost a ticket and try to claim it. They always lose. It's always the person who has possession of the ticket who prevails.