Hello MythMe,
I have talked to Prestige Invalid about the situation & read through the thread you linked.
In my opinion: if you used that strategy or logic or however you wanna call it, you should not be punished for it and it shouldn't be on your part to prove that you did and it should rather be on the staffs part to prove that you didn't.
I'll replace your Mass RDM punishment with a warn for RDM as apparently you did RDM one person tho no further actions against Prestige Invalid will be taken as this is not demote worthy or worthy of punishing Prestige in any way.
I apologise for any inconvenience you had.
Have a nice day!
~ Lock ~