Our school's musical this years was "Oliver!". And for those who know the play one of the scenes is in Fagin's Den. So to show this scene we build a wall, just pieces of 1X4 screwed together in a jamble, that we flew down when needed. One of the performances we had was for the junior highs in the area. And in one of the scenes where the wall was needed our backstage crew brought it down while there were people moving rolling staircases and such on stage...only one side of the wall got caught on one of the moving staircases. So it was all crooked but we had to go so our Student Stage Manager called the cue for lights up to go. Needless to say the director was not very pleased. While our SM was trying to find an non obvious way to get the wall off the staircase the director was running around backstage trying to find his own way. At the same time our SM sent a techie crawling under scenery the director sent one of the actors on stage to make it look like it was supposed to do that to lift the wall off. All the while our SM is telling all our backstage crew that he has it under control and that the director shouldn't do anything but they couldn't stop him. It all ended up fine since no one really complained that much.