I have read a number of your threads but haven't commented yet. 2x4 incoming, but it's not meant to personally attack you. It comes from hard-earned experience navigating the shitshow that I too created with my own horrible choices.
I'm a fWH (55). My BW (51) and I are now 6 years past D-Day and I am eternally grateful she has given me the undeserved gift of R. I have also been with my IC going on 7 years this November. You can read a bit about me on my profile and some of my recent posts.
Now that I've introduced myself to you...
A Power Point? You actually subjected your BH to a Power Point in MC? A Power Point (if I'm understanding what you wrote correctly) designed to tell him all the things he's just not getting about R???
My goodness. How he didn't walk out of there, I don't know. My BW would've strangled me with the projector cord before I had a chance to plug it in. While I'm sure it felt wonderful for your former MC to validate all your points, do you think your BH may have felt ganged up on? Attacked in a place that was supposed to be safe for both partners, which is why he shut down during your PP?
A few months after D-Day, my BW suggested we go to MC. She did the research and found one for us. I tried to discourage it on the advice of my IC, but she insisted we go and so we went.
We lasted 2 sessions. She told me, "I should've listened to you. Maybe we can try again at some point when you've unfucked your own head a bit more and I'm not so traumatized by your shit!"
I'm glad you started with an IC for yourself. My advice is to stick with it for a long while (both you and your BH) and drop MC for the foreseeable future.
It has been said here many times by very wise people that MC is an absolute mistake until both the WS and the BS have healed themselves. We didn't try MC again until January of 2023. Three-and-a-half years after D-Day before we were both ready to make it work.
I was extremely lucky to find a good IC from jump street, somebody who called me out on all my crap excuses and got me to start looking in the mirror and truly finding WHY I was capable of betraying the spouse I had sworn before God to love, protect, and cherish while forsaking all others.
Having no one to talk to isn't a why. It's an excuse. Being a conflict-avoidant people-pleaser is a why. Ask me how I know.
I'm glad to see you posting again. Please keep doing it because it helps a lot of other people besides yourself. I wish you and your BH all the best going forward.