The shirt thing would be very hard to tell if it is connected with you, or if it is how he always dresses. Is it hot in the office? is this something that happens on those days only? With the phone situation, how often has that happened? was it just the once and one of those things where it just happened? (my alarm has gone crazy once) or is it something that happens regularly. Knowing some of those and looking at them might help you know if it's connected with you or just bad timing with the phone, and how he is with the shirt (which still leaves you with having to decide if it's too much).

I hope it went well today with bringing some of these things up and that you are able to address whether he is "using himself" in the therapy sessions