There is no Justus Weiner controversy. Weiner did a hit piece on him, that ended up being debunked. A full list of the inaccuracies and distortions may be found at a Counterpunch collection of articles
dedicated to the topic.

I am not adverse to covering the nonsense Justus Weiner attempted to kick up, but it has to be treated for what it is - an attempt by an anti-Palestinian writer of an anti-Palestinian think-tank to attempt to say that Edward Said, the best known Palestinian in the United States, wasn't a Palestinian (and furthermore, that "there are no Palestinians.")