He's not just copying York, is he? He's worried that he is. Should be able to pull his own damn moves together, right? But no, he can complement the moves. Predict what's coming even if he can't quite predict the music. Yes. This can work. He finds a place to toss his jacket (hell, he doesn't wear it that often that he can't just get it dry cleaned) and moves.

In fact, he moves to tug York's arm, to spin them around to avoid smacking some half-drunk dancer, and he makes it look like just another dance move rather than something that belongs more on the training room floor. He can learn. Pick up a few things, incorporate others.