I caught the Noon performance of Tarzan Rocks at Animal Kingdom today. During the sequence where Jane is introduced, Tarzan clasps on to two straps attached to ropes that are supposed to swing him around the stage in circles.
Before he could make it through one full rotation, the straps appeared to give way (or he lost his grip) and he went crashing into the three singers on the elevated platform. He got up quickly and ran forward, but then acquired a look on his face that caused him to look as if he was in great pain and then ran off.
I initiated some clapping for all their good efforts because it seemed obvious that Tarzan wasn't coming back. Some of the cast looked around nervously and improved a little and then the curtain literally closed on them and a canned spiel was played: "Ladies and Gentleman, due to unforseen circumstances, this performance of Tarzan Rocks has been cancelled."