Possible Affiliate Scam?

I had something strange happen with one of my affiliate sales recently. I have one affiliate who got a few sales for me last month. Although, one of the buyers was not in my target market at all... a woman. My ebook has advice for men. Also, none of the buyers referred by this affiliate have registered their ebook yet. I can tell because I use ebook software that requires registration after purchase.

So, yesterday I receive a Paypal claim. Apparently it was initiated by Paypal and after speaking with them I was told that they typically do this when something about the buyer is fishy. Sure enough, it was related to the "female" buyer of my ebook.

I'm wondering if there is a scam going on here. Maybe this affiliate is somehow generating fake sales and then will wait until he gets his mass payment (commission) from me and then bolt. I use e-junkie and payments are made via mass payment with Paypal the month after affiliate sales are recorded.

Has anyone ever experienced something similar to this??

I'm holding off on paying this affiliate until this is resolved.