[Mauzen]

If you want to hide the positions and interiors you are using (I guess this is what you want, couldnt think of another reason why you would need to disable these commands) you could try to make cmds /save and /interior in your gamemode that teleport the player away for some ms only and then teleports the player to his old position and interior. Maybe this would cause the client commands to save the position/interior you set, but im absolutely not sure which of them gets executed first, I guess it will work only for people with a low ping.