Remus had almost growled at Severus, he had never been anything but loyal to the order, the school and to Harry. He would do nothing he thought would endanger the students, any of them.
The fact Ron had seen Sirius made him remember the whimper he thought he had heard a while back and also the way Fang had acted not much later. He passed his office, "Sirius... even you aren't this foolhardy... are you?" He whispered under his breath.