Was Adam Sandler leaving the Oscars staged?

The moment you are referring to is likely Adam Sandler's comedic bit at the 2020 Academy Awards, where he presented and joked about not being nominated for Uncut Gems, or his appearance where he left his seat and interacted with the audience. That specific moment was not staged as a walkout protest, it was a scripted comedic bit that was planned with producers to poke fun at his Oscar snub. Sandler had said on Howard Stern that if he did not get nominated for Uncut Gems, he would make the worst movie ever, and the Oscars played along with that joke. His leaving his seat, joking around, and interacting with the crowd was part of the show's attempt to add humor. A separate viral clip of Sandler seemingly storming out of an awards show was actually from a comedy sketch or a misinterpreted clip from a show where he was performing. Sandler is generally very respectful of award shows and has not staged a genuine protest walkout. The 2020 Oscars also had a moment where Eminem performed and Sandler's reaction was genuine surprise, not staged. So while comedic bits involving leaving or standing were planned, there was no real unscripted angry exit that was staged to look real.