Sean's album 'Into the Sun' is much more than jazz, Aujouret. In fact, I wouldn't characterize it as a jazz album at all. Just some jazzy moments. You need to give it more of a chance. I don't think you're gonna get a very broad scope of the album by just listening to samples at Tower Records. It's actually a very beautiful album, IMHO. Although, I like Julian's Photograph Smile much better. You can definitely tell that Jule's is a much more matured artist. As for John "rolling over", I highly doubt that. First off, as I mentioned, it's a good album. And second of all, I'm sure John would be VERY proud of Sean for his accomplishment.
But as far as Yoko brainwashing Sean, I believe there's probably some truth to that. I think both Sean and Jules are pretty messed up in the head, (Sean because of Yoko and Julian because of John), but I do listen to what Julian has to say much more than Sean. Jules, like his father, tells you how it is, straight-forward. No B.S.