If he was shocked at the seemingly minor things, I wouldn't tell him the disturbing things.
I'm in recovery from an alcohol addiction. I had blackouts. I SHUDDER at the thought of what I said and/or did during those times that I have no memory of. It literally turns my stomach when I think of the possibilities and the people affected.
If he caused you no true harm, and you are honestly ok with keeping it to yourself, I think that's what you should do. No real benefit can come from telling him something horrible he did or said. Now, if he needs to undo a wrong he did, or if he caused you true trauma or harm, and you need something from him in return to be able to heal or move forward, then tell him. Otherwise... I don't see how it could possibly help him.
Just my two cents. I hope you don't mind me answering.