Here is my two cents (and I know I am internet "buddies" with Will)
This is a community. A ton of people got took by him. I bet you bought that card for a real good price too. Why not sell and split to lessen the loss? I would like to think I would do the same if I were in your shoes.
But why should you have to suffer too? Just saying legally you have stolen goods and now you know they are stolen.
*Photobucket: let me know if you like anything. http://s1114.photobucket.com/user/Marsili84/library/Harder%20To%20Get%20Stuff?sort=4&page=1
*Looking for Pistol Pete Maravich Autographs https://www.youtube.com/watch?v=9qv0YS1wHoQ