Check out Mirzali Arlsanov's comment on the Kalamazoo Live's article about the incident. Arlsanov claims to have been approached by two men on Nose Hill, propositioned in the same manner as Warwa and then given tickets to the Stampede for free.
http://www.mlive.com/news/kalamazoo/..._river_default
Edit: Duh. That's exactly what Thor was getting at not more than two posts above mine.