There had been a reason that Remus had been asked to be the DADA teacher for Hogwarts. When he saw Draco's hand come back up this time, years gave him the advantage. His own matched it and he snapped his wrist hard, calling out the matching spell to Draco's own at just the split second faster.

But Remus looked pleased. "Well done! Caught on quick to that trick actually, both that it was an illusion to start with and then where it was." Praise, even if the disarm wasn't successful.