OOC: So, I've been super busy, and my plan to have wolves come out on every full moon sputtered and went out. Which is really crummy since the first full moon in January was actaully CALLED Wolf Moon! And the second one was the Super Blue Blood Moon. Man, those would have been perfect. Aw well. There's be lots of full moons to work with, and I'm in no rush now. It actually makes it easier now that the cycle's been broken I'm able to take the time I need to plan things out right.
But I realized that an explanation is in order, and so I've worked it into the story.
The short answer is that Wulf was imprisoned on both of those nights, in order to keep people alive. And I mean literally, in a cage. and in chains.