I am in awe of people in the control booth - whether TV, radio, or theatrical - who can stitch together a collapsing show.
Not only is there a lot of talent there in the booth (and among the crew), but there is a kind of fearlessness that is amazing.
I remember one stage manager in a complex musical (Into The Woods) who had to re-sequence multiple scenes in real time because an actor took an critical prop offstage on the wrong side.
We once did a staged reading about a collapsing show from the crew's point of view - it had things like the sheriff showing up to Hamlet, thinking a murder had been committed. And the union guy was madly skimming the rules to see whether it was ok to kill the reviewer by dropping a light on him. It was fun - and afterwards the script got lost!!