Brad Pitt roughed up at own première in LA! 

Just when he thought it was safe to surface  between volleys launched  by the missus and ex-missus, Brad found himself the recipient of an assault most bizarre.

At the preem of new flick The Curious Case of Benjamin Button was seized, jostled and then spun around by an overzealous undercover security guard who ironically was hired to protect him.

As Pitt de-limo’ed at the Westwood preem, paps swarmed like locusts, all aflutter to snap pix of the A-lister.

But instead of shooing the photogs away, the guard went after Pitt, grabbing him roughly by the arm, spinning him around and then pulling him backwards.

"Just another day in the life…" the unflappable Pitt reflected.