I don't have a camera yet but am now thinking about getting one. My worry is, as I can be quite anxious myself, that it could also have the opposite effect - increase my anxiety if I see exactly what he does (in other words, more things to worry about, as in what exactly he does and doesn't do).
The weird thing is that he was really sociable before the summer. Of course it could have been the house sitter, but he was ALSO very sociable right after, jumping around in the play pen, and keen to get out! He was hard to tame (in terms of touch) but he was definitely keen to get out and have fun. And then suddenly he went to this - I know the room change and the rat might have made him anxious again, but he has now been back in the old room with no disturbances or changes for two weeks, so it just seems to me a bit extreme in terms of reaction...?