[Hm... ] I can only do my best to tell you what I know then, then.

I saw him go into his room when it was early into being on lookout around those dorms. I would have seen anyone else coming through, for that matter. I was doing so because I was wondering if anyone else would get taken like Santa probably was.

It may not fill the gap of when I eventually fell asleep by his door, but I did see him go in his room before I had nodded off, is what I can say. I would've seen and heard him come out during the time I was awake, at the least.