Hello, I was the admin that approved the PK.
You were set active for "shooting at close business partners and ignoring orders from High Command" They then contracted another faction to go and kill you.
When joining an illegal faction you have prompted a message, signing away your life to the faction/family and if you break any of their faction rules they can go ahead and get rid of you, like they did in this instance.
I am not too sure what you mean by "admin power abuse" if you wouldn't mind replying and explaining further I'd appreciate it.