I didn’t see this, but my wife did a long time ago…
She attended a College Light Opera production (Cape Cod, MA) of Oaklahoma, and the lead made his entry racing across the stage while bellowing “Oooooooooooooo…”. The first night he stopped just short of the edge as he transitioned to “…klahoma, where the winds come sweeping down the plains!”
Well, she liked the show so much, she went again. This night, the lead came sprinting out just as before, dug his heels in at “…klahoma…”, and kept right on going over the edge and into the orchestra pit. Maybe the hard break the night before wore the treads off of his shoes. Anyway, the guy goes flying into the orchestra and completely flattens the oboist. The rest of the band keeps playing, and they guy kept singing the whole time. Cries of horror erupt from the audience, until the guy emerges from the pit, tearing around the stage to climb the stairway back on, singing all the while. The oboist is on his hands and knees groaning while the “star” is trying to keep his composure. The audience starts to lose it completely about 2/3 the way through the song, and the flying lead exits red-faced, and with a slight limp. The oboist found a new reed and was ready for the next number…but not before getting a standing ovation upon retaking his seat.