I would assume the difference is that the WWE site has this information posted as news. It does not relate to anything we are yet to see on screen, thus spoiling the viewing of the show. Jeff is taking part in a loser leaves match that will be shown on Friday, so talking about how he is leaving is spoiling Fridays show. To be fair though I personally don't get too worked up about folk posting spoilers online, because if you come on to anything wrestling chat related you can usually expect it.