You didn't overreact op, sometimes you gotta do what you gotta do, no regrets.
I cut all my ties, suddenly and forcefully, with a lot of my high school friends 10 years ago, and.moved on.
Then I did similar with the peeps I knew at college, just less brutally.
Glad I did, a good portion of them fucked up their lives and I've seen the good apples get dragged down by the bad ones.
You did nothing wrong op. Sometimes you just gotta fuck people off.