The mix was probably an early mix given to the artists before the completion of the album. They were probably watermarked by the U2 gang to prevent the artist from leaking the track in anyway, and the fact that the artist is mentioned by name, if it leaked they would have known where it came from. It was quickly removed from the site and replaced with the video with the album mix of EBW, and that is also the version found in the paid version on iTunes. So I think that was the intended video, and somehow an early rough version got out there...