The previous rules about staff massing were simply due to the fact that staff masses go to players even if they have masses blocked. Those rules, however, were rewritten
several months ago. The current rule set says nothing explicit about staff massing either on or off tag. They do however say to use common sense when judging what you can or cannot do.
If being removed from the admin list on RC means the non-blocking masses only work on tag, then of course they are allowed to mass freely off tag. The only exception to this is that staff should be seen to set a good example for players to follow, both on
and off tag, so should be extra careful about the content of their messages. I'd say that behaving yourself over masses is pretty obvious though.