No, Procyon is the supreme authority on the site - Nick and the other mods only have a fraction of his authority delegated down to us.
As for taking down images remotely, it’s very easy. Unless you post it as an attachment on the forum, what you’re doing is telling the browser of a person trying to view it to load the image from someone else’s website (unconnected with this forum). If they wish to, they can block such remote uploads - this making your image disappear. If they’re really against you doing this, they can even make some VERY unpleasant images appear in it’s place.