The scene started with the actor on a stage in front of a audience of Monokuma's and the acrobat on a rop above the stage.

Not knowing what to do the actor and the acrobat just stood there making the monkuma' throw rocks and tomato's at time

(I'm just guessing cause they go on stage they have a fear of failing a performance)

The acrobat being on a top almost fell but not quiet yet.

If the acrobat was to fall then they would fall on top of the actor making them both die.

Monokuma was getting angry and threw a rock at the acrobatics head, killing them and making the acrobat land on top of the actor making the actor also die.