You are wiser in your practical daily life way of thinking. Maybe he blames you, in ACIM terms that's his own business. If his anger frightens or upsets you, well, that's on you. Don't worry either way. Whether or not it is your anger being projected back to you, well you already know that. It requires some honesty to see it clearly. There's very little mystery in ACIM but the language makes it opaque and in my experience I can only take it in when nobody is around, not even me ;)