if you need a mod asap and no mods are online, post in the "to be deleted thread" if it's concerning threads, posts, feedback, comments, pictures that cross the line, if it's about something else, you could post in transparent moderation or something....
and @ toast, this was basically the whole reason why i was made a mod since i live in a different timezone than the other mods so i'm usually online when other mods aren't...