AITA for leaving my dad and stepmom’s house to live with my wealthy grandparents, and blowing up at them on my way out?

I (18M, Ethan) recently moved out of my dad's house and in with my maternal grandparents (Richard, 71, and Linda, 69), and now half my dad's side of the family is calling me an ungrateful jerk.
Some background: My mom (Sarah) died when I was 16. Before she passed, I lived with her full-time. After her death, I was sent to live with my dad (Mark, 45) and his wife (Rebecca, 42).
Rebecca is a very devout Mormon. I'm not religious. I made that clear from the beginning. Unfortunately, Rebecca treated that less like a personal choice and more like a challenge.
For the last two years, she has been trying to convert me. Constantly.
There were church meetings I didn't want to attend, religious books left on my bed, lectures about my "eternal future," surprise visits from church members, and endless conversations about how I would eventually "see the truth." My dad backed her up every single time.
I repeatedly told them I wasn't interested.
Nothing changed.
The thing is, my maternal grandparents are extremely well off. Not billionaire private-island rich or anything, but definitely millionaires. They own several businesses and have more than enough room for me. They had wanted me to live with them after Mom died, but there were legal and family complications that kept that from happening.
Once I turned 18, I made arrangements to move in with them.
I told my dad and Rebecca weeks in advance.
Neither took it well.
The actual move-out day turned into a disaster.
My grandparents had sent movers. I had my bags packed. I was literally heading for the door when Rebecca stopped me and said she had "one final gift."
She disappeared into another room and came back holding what looked like a Mormon missionary outfit: white shirt, tie, dark slacks, the whole thing.
Then she gave this speech about how God had one last plan for me and that before I left, I should try it on and pray about becoming a missionary.
I honestly thought she was joking.
She wasn't.
She actually expected me to put it on.
After two years of nonstop pressure, I finally snapped.
I told her she was delusional if she thought I was going to dress up in a costume for her last-ditch conversion attempt. I called her controlling, obsessive, and a religious fanatic. I also called her a few less polite things, including "creepy," "nuts," and "the most exhausting woman I've ever met."
Not my proudest moment.
Rebecca started crying.
Then my dad got involved.
He stood in front of the door and physically blocked me from leaving. He kept saying we were going to sit down, talk this through, and that I wasn't walking out "like this."
I told him to move.
He refused.
Then he grabbed the missionary outfit and tried to hand it to me while Rebecca kept insisting I should "just try it on."
When I tried to walk around him, he physically shoved me backward.
One of the movers witnessed the whole thing and called the police.
Long story short, officers showed up. My dad kept arguing that he was "just trying to stop a mistake." The officers did not agree. Since I'm 18 and he had physically prevented me from leaving, he ended up getting arrested.
I left with my grandparents that day.
I've been with them for three months now. Life is peaceful. Nobody is trying to convert me. Nobody is leaving religious pamphlets on my pillow.
But now some relatives are saying that while my dad was wrong, I crossed the line with the insults and humiliation. They say Rebecca was only trying to save my soul and that I should have been more respectful.
I think after two years of having my boundaries ignored, I was justified in finally losing my temper.
AITA?

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u/Illustrious-Fee5670 — 9 days ago

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u/Illustrious-Fee5670 — 9 days ago
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u/Illustrious-Fee5670 — 9 days ago
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u/Illustrious-Fee5670 — 11 days ago