[Aizawa can tell that Ryuji is calming down somewhat, or at least becoming less angry--which he sees as a good opportunity to de-escalate the situation. His expression softens just slightly, though it remains stern.]

Use your head. If you harm someone on this ship, will it make the music stop? Will it get us back to our homes?

[He almost seems as if he's going to wait for an answer, but then he closes his eyes, his hair falling back down as he lets his grip on Ryuji go slack. It's gonna be an unceremonious drop to the ground unless he gets his feet under him very quickly, sorry dude.]

You have your Quirk back. Think carefully about who you really want to be, next you use it.

[And he turns, as if to leave, but his back is left open. Almost like a test.]