Yeah, it could be something else like that. I do get feeling that 3 global moderators aren't enough given the level of spam this forum is subjected to.
We've been chugging along a few weeks with only 3 Global Moderators, and I don't think too many people noticed that Salty, and grue were inactive. Salty as been logging in, but hasn't done too much moderation work based on Hilariousnadco's comment. theymos recently made a comment that its not about the budget of the forum, but the lack of trust in delegating roles to users. So, I don't expect us to see new moderators/global moderators, and would assume that existing staff members will be promoted if there is a need.