DR TCB, we have all been through that kind of torturous performance, so I know how you felt, and with the playwright there, I'm sure you were embarrassed, but don't worry about it. It's history now, and you have other performances to rectify things.
I love that moment in the COMPANY documentary where Susan Browning, I believe, says that performances are in the moment and then they're gone and you get to do it again. Only recordings are permanent. Same rationale here.