Can you get out and go for a walk or something? Get a bit of space to give you time to get your head in order? Some of the things that happen are just cruel and mean and hurtful. But it does depend on his motivation for it as well, and thats the part you are assuming.
Maybe he took the photo down because he is feeling so torn he cannot concentrate on anything and is trying to clear his head for a while too. Maybe it was because he thinks you guys are not in that place. Remember, those were just his thoughts at that time when he looked at it, in that hour, on that day. Hes still living in your house,isn't he? Maybe he really didn't think that moving it would hurt you. It is one little item. Its ok for it to be the item that brings you down. Feel it, let it out, then pick a fun item to do later in the day to move you all to a better head space.
Sometimes you need to loose the battle to win the war.
