You were being wayyy more disrespectful than they were, for a start. The "go hang yourself" being deleted was a good call though.
Xnator clearly saw that you were being very disrespectful in comparison, and I assume he verbally warned the others, as that is all that was required for them IMO.
I don't see any wrongdoing here other than not taking you to a sit, but you should clearly understand why you were muted.

Very abusive, warned me for telling R-Flex to fuck off and r-flex was totally fine with it, and then he warned me
You'll need proof for that claim, and you should be able to appeal it if your story is true.