This is the problem with moral relativism. Morality and values are today determined based on any individuals point of view at that moment. While many decry the "Ends don't justify the means" in other people lives, it's perfectly OK in there's.

You did just fine and as the Director, it was your responsibility to make the call on how to best ensure the performance went on in the best way possible. It should not take a lie to justify that to anyone.