Another quick to addon just as info.
IF you have to add another global mod you will have to remove ALL those names with Global Mod privs for it to stay "fixed". So before you add (or remove) a global mod. Remove all forum mod privs for all your globals.
I THINK that it has to do with Global mods automatically getting moderator rights in all forums they have access to. So Rick if I may suggest maybe making it so that if the permissions are there, they just auto-add to the list (so that they are already shown as a forum moderator in the moderator listing) I think this is ultimately the reason why they are getting added again and again, mainly because the permissions get updated but it doesn't look to see if they are already present as a moderator in that list. *shrugs* Just trying to help.
