I was thinking something similar. If you're writing a persuasive speech, usually you have a bit at the end where you look at it from the other side of the argument, and then say why that other side is wrong. I forget the name of it. Anyways, at the end of his speech, he could say something similar to what you said. Really thinly veiled. The professor wouldn't even be able to give him a terrible grade if the rest of the speech was decent, unless she decides to be a bitch.