Honestly, one of the reasons that Remus wasn't shouting was because, for the first time in ages, he was actually well rested. His temper had always been easier to keep when he wasn't tired. It was just that he had been exhausted when he arrived.

Remus reached up, rubbing his eyes. "Knockback jinx. It would, hopefully, have given us enough time to get past them and out the door." If they could have gotten out the door, at least. Strongest spell he had, but he didn't HAVE to tell Sirius that.