"I cracked him twice in the back of the head – not too hard," the star tells PEOPLE
But prior to walking the carpet with Jolie and five of their six kids – Maddox, 12, Pax, 10, Zahara, 9, Shiloh, 8, and Knox, 5½ – Pitt clashed with notorious Ukranian ex-journalist Vitalii Sediuk, who jumped a police barrier to get to the actor. Sediuk was promptly arrested, and Pitt continued to sign autographs for eager fans.
In an exclusive statement to PEOPLE, Pitt is now giving his take on the run-in.
“I was at the end of the line signing autographs, when out the corner of my eye I saw someone stage-diving over the barrier at me. I took a step back; this guy had latched onto my lapels. I looked down and the nutter was trying to bury his face in my crotch, so I cracked him twice in the back of the head – not too hard – but enough to get his attention, because he did let go. I think he was then just grabbing for a hand hold because the guys were on him, and he reached up and caught my glasses.”
“I don’t mind an exhibitionist,” Pitt continues, “but if this guy keeps it up he’s going to spoil it for the fans who have waited up all night for an autograph or a selfie, because it will make people more wary to approach a crowd. And he should know, if he tries to look up a woman’s dress again, he’s going to get stomped.”