There is some weight to the reasoning that they are making room for more DS games on the shelves of smaller shops, I have seen many pictures of DS games on PSP and playstation areas already so it isn't too far fetched to imagine this could happen. On the other hand - it's just one shop (and a picture without a link!) If it was a whole chain of stores it would be all over the gaming news.
"..just keep on trying 'till you run out of cake"