I hate to tell the author of this piece, but this in Scripture.
Mark 14:65 And some began to spit on him, and to cover his face, and to buffet him, and to say unto him, Prophesy: and the servants did strike him with the palms of their hands.
As far as the Jewish Priests being present at the Crucifixion and taunting Our Lords, this is true too.
Mark 15:31 Likewise also the chief priests mocking said among themselves with the scribes, He saved others; himself he cannot save. 15:32 Let Christ the King of Israel descend now from the cross, that we may see and believe. And they that were crucified with him reviled him.
As usual, this guy doesn't have a problem with Mel Gibson or his movie, but with Scripture. The other things-the scene on the bridge, the Priests on Donkeys-are artistic license, and certainly not inappropiate. As far as the Jews entering the Praetorium, if this is in the film, it is a historical blunder. But there was an antechamber to the Praetorium, and Jews could go there. Perhaps this is what is intended in the film, but it may not be explained correctly.
What I get from this review is the impression that it was written by someone who has a modernistic bent, and doesn't like the politically incorrect parts of the Gospel(ie, the Jewish establishment's participation in the event, Pilate's vacillation). His problem isn't with Gibson or his film, but with the divine revelation contained in the Holy Gospels and in Sacred Tradition.