Halloween Resurrection

Three years after the events of the previous film, Laurie Strode is in a psychiatric facility since she beheaded a paramedic instead of her brother Michael Myers. The paramedic had located the body of Myers in the dining hall of Hillcrest Academy; Myers attacked him, and crushed his larynx so he wouldn't cry out, and switched clothing and his mask. As Laurie drives the coroner's van out of the school, Myers in the paramedic's clothing walks out of the school grounds and goes into hiding for the next three years.
On October 31, 2001, Laurie, pretending to be heavily medicated, prepares herself for the inevitable confrontation. Michael appears at the hospital and kills two security guards, decapitating one and slitting the throat of the other. Laurie lures Michael into a trap, as she attempts to kill him, Michael feigns confusion and pretends to struggle with his mask. Unable to risk killing another innocent person, Laurie starts to remove his mask to make sure that it is her brother. However, Myers gains the upper hand, and stabs her in the back before sending her off the roof to her death. His mission complete, Myers returns home after more than twenty years of hunting and tracking Laurie down.
The following year, college students Bill Woodlake, Donna Chang, Jen Danzig, Jim Morgan, Rudy Grimes and Sara Moyer win a competition to appear on an Internet reality show directed by Freddie Harris and his friend Nora Winston, in which they have to spend a night in Michael's childhood home in order to figure out what led him to kill. On Halloween, each equipped with head-cameras as well as the cameras throughout the house, they search the house and separate into three groups. Sara's messaging friend Deckard watches the broadcast during a Halloween party.
Donna and Jim begin getting intimate in the basement and a wall filled with corpses falls on them. Jim realizes the corpses are fake and the show is a setup. Jim leaves, but Donna notices a tunnel behind the fallen wall. Myers chases her through the tunnels before impaling her on a spike on the wall. At the party, Deckard and other partygoers witness the murder. Deckard realizes that the murder was real, but the others believe it is an act.
Freddie goes through the house dressed as Michael, but is secretly followed by the real Myers. Freddie, mistaking Michael for Charlie (a cameraman who had been killed earlier), tells him to go to the garage and help Nora out. When Rudy, Sara, and Jim find Freddie in the Myers costume, he reveals the scheme to them and begs them to cooperate, telling them that he's set up a nice payday for all of them. When he leaves, the trio decides to gather up the other three and leave. But before they can, Jen discovers the body of Bill (who was stabbed in the head and vanished earlier) and is decapitated by Myers right in front of Rudy, Sara, and Jim. Rudy and Sara flee, but Jim stays to fend off Myers only to have his head crushed. Myers kills Rudy by pinning him to the door with kitchen knives before chasing Sara upstairs.
Locking herself in a bedroom, Sara begs for Deckard to help her. The other party goers realize that the deaths have not been staged. With Deckard messaging her Myers' location, Sara escapes and is found by Freddie. Myers finds and attacks them. Freddie is injured and Sara makes her way to the tunnels. She finds an exit near Donna's body and emerges in the garage, where she finds Nora dead. Myers finds her and starts an electrical fire in the garage. Freddie returns and begins fighting Myers hand-to-hand. When he is overpowered, Freddie instead electrocutes Myers, tangling him up in electrical wiring before carrying Sara out of the burning garage.
Myers' body and the bodies of his victims are taken to the morgue. As the medical examiner begins to examine Myers' body, Myers' eyes open, and film ends.

Question: What does Michael pretend to struggle with?
Answer: His mask