The problem occurs post show, when the audience was departing the theater and thanking the cast, and being thanked by the cast. Our hero's post show glow was shattered by someone saying quite bluntly that the "Molière scene" was totally wrong. Completely, totally wrong. The inadvertent tongue lashing made our hero feel pretty dumb... and while he's by no means a rocket scientist (gave that up for performing), he's not dumb. But feeling that way is a sure fire way to get him to clam up and get super-duper pissy.
Since then, however, whenever specific genres or authors are dictated for a scene, the ghost of "Completely, totally wrong" comes back and causes a total brain lockup. The cerebral cortex filter kicks into afterburner overdrive and completely shuts down all communication to the cerebellum, rendering our hero about as Improv savvy as over-buttered toast. Which is why, at tonight's rehearsal, what started out as a swimmingly fun night quickly came to a screeching over-buttered toast halt. Our hero felt dumb, and once that happens, it's all down hill.