I say nice deal. Let fate take it's course. You're not a lying/stealing kind of guy. You've put it out there for someone to truthfully speak up. If you are meant to have them by honest means (as in your story, which was funny as hell btw) then you will get to keep them. If you inadvertantly aided some bad stuff then kharma will catch up with you.

It's not like you stole them. The situation is what it is.