Maybe I'm being neurotic here. If I am, don't hesitate to tell me, I can take it       but I've just received a message from someone who bought an image of mine. The image is the back view of a wheelchair athlete (so unidentifiable) zooming along a path, and the questioner asks ...

I have just purchased your great picture of a wheelchair racer that I believe I know. Can you tell me if this was taken at last years (xxx) championships in (yyy) ? Thank you

Given the awful warnings of the microstocks about model releases, and the fact that I have no model release for the person this image, should I confirm/deny the facts? What would you do?

(P.S. I've removed the identifying words from my questioner's message)