I see, we all love to make jokes here? There is a my joke for you - If I see any of mods show killing, spawnkilling, or anything like that, in next few hours you will get your VIP again. Ouw, but I have no sense of humour, so perhaps, its not a joke?
Perhaps there is no new rules yet, but If you can not simply use your logic and understand the difference between killing spawned players by blocking way to equipment and regular fights, I'm afraid you will not be competent moderator.
Also, as moderator, you have to understand, that you can be reported for any your mistake. Maybe in your opinion, you did some good thing, perhaps you killed only shopkillers. But it is the reason why you got special moderator abilities - to show people that they violating rules, to punish other violators to prevent other players of doing the same. They won't understand anything of it, if you would wandering around in the shop and just kill them with machete. You just provoking them to do the same.