If it's gone, it is probobly either fake, or a sourse on the West Coast is passing around the same script and WB is closing in on them. They dont mess around anymore, and UGO very well might be violating a diclosure agreement, or just be a patsy in a bust to find holes in the production.
One things for sure, WB isn't going to be handing out press or screening passes to some websites after this. Of course those sites will do the usual "they dont want us to see it so we cant tell you how bad it is", when it's more "You burned your bridges" type situation. This is all just very frustrating, sad, and seems like theres an agenda.
You figure all the lessons learned from AICN's advertising of "Negative" Hulk reviews a month before the movies release (and also letting people know in the process it's out there on the net to be downloaded), and unwillingness to publish these reviews and being called Hypocrites for it. Or the Abrams superman script mess.
I would think it's great if this script is an early draft that was leaked by warner Brothers Security and Legal, just to see where it would pop up. And all these "Spoiler Sites" get burned in their rush to publish early damning reviews.