After talking with B, we have decided to leave the Mac mini available at all times for Robotson (and the girls). That gives him access to Garageband, iMovie, iTunes, and a web browser. Robotson and I talked about the new arrangement yesterday. He told me he didn't want me to help him learn how to self-regulate, but I made sure to empathize with his feelings. That really seemed to help and he didn't argue the point. My number one goal for the coming months is to remember how much he enjoys the computer and to not minimize those feelings.