Healthy or unhealthy coping strategy idea?

So I'm dealing with a lot of repressed feelings that have suddenly burst forth.

One being that right now I am EXTREMELY angry with my mother. Her presence and her voice continues to trigger me and I'm angry because I feel like she was not the mother I needed and that pisses me off!

So, I'm trying all sorts of tactics to get through this.

*TW*
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Yesterday, after therapy, I emailed my boss, telling him I was taking a personal day,and did more self-reflecting. One of the things I realized was that I'd never really let myself get angry with my mother, like ever. So, I went into my bedroom and grabbed 2 pillows. I stacked them up against the wall and I started pounding, like really pounding and punching. I bawled and I screamed "I hate you!" several times over and over and over again until I felt at peace in my core. Afterwards I was emotionally and physically taxed. But I felt tremendously better.

So my question is this.......

I don't think that my mother thinks that anything is wrong with "her" family. My dad used to drink (has been sober for several years now) and we never discussed it then, nor do we discuss it now. So the elephant in the room is still there........ my mother thinks that she brought us up well because we were the perfect children (yeah, we were scared to death of her!) So in her mind, we've healed (despite the fact that the ONLY person in the family that has sought help has been me!) Point blank, I'm not going to get anywhere with her if I try to have a sit down and discuss my mental health with her. It would be like trying to explain Einstein's theory of relativity to a 2 year old! So I have an idea.......... would it be unhealthy if I started to refer to them as my human birth parents, but (and I'm going completely metaphysical/spiritual here) claim (in my mind, heart, and soul) that I am a child of the universe and that God is my mother and father? Is this being weird? Am I avoiding? Jumping into fantasy? Is this emotionally healthy?

I'm thinking this may work because although physically my parents brought me into this world, I am more than that and this lets them off the hook. They did the best they could and now I can move forward and forgive them. I can still associate with them and love them from a distance because again, they brought me here, but they are no longer responsible for making things right. I can work with the divine for peace and sanity and healing.

Thoughts???

i'd like to first say that i can relate and also admit recently i had this very same conversation with my mother i told her how i think her mothering skills were not natural, her sexually behavior wasnt natural, men coming out her ears and we couldn't say anything...this has took me 25 years to have this talk with my mother and its the best thing i did...it gave me closure it cave me the ability to forgive her. i cant say i love her fully but i do feel different now that i have cleared the air

I cant say that it will help for you but this is just to say "if" your thinking of going the path i took then you will feel it the right time in your gut ...i did at least.

As for the disconnection - normally people would say "no no definitely not" but these days it seems to be the only way to disconnect ...there are different techniques and meditations for that...but after the disconnect are you saying that that's it you never want her in your life again or are you saying that its a temporary solution to help you overcome the resentment you feel?