Other mistake: When Buster Moon is calling out the solo acts for final selection he calls Daniel's name with no megaphone and Daniel can hear his name fine. Then when Buster is making the selecting the solo finalists, Daniel cannot hear him, requiring Buster to use a megaphone to talk to him.
Other mistake: Considering how famous Nana Noodleman is it's odd that everyone is surprised that she's still alive.
Other mistake: When Mike finishes his song and the audience begins applauding him, you can see the microphone cord dangling from somewhere above the sets, despite it previously having its stand on the stage. This is obvious when he's swinging from it. What is it hanging from, thin air? There was nothing he could attach it to while swinging; the cord should've snapped rather than holding.
Answer: I think he escaped from the bear with his girlfriend, sped off very fast and the bears fell off the car.
You haven't read the question. Before it cuts to Meena's performance, the lead bear popped up from behind the car and presumably kidnapped them.