Charles, I opened the ticket before finding this thread - search turned up nothing useful, then I happened upon this one.
Anyhow, after reading the above, and posting my stuff, I implemented the above - pruned old inactive members and shut down who's online. Host was happy, board's back up and about a day or so later someone looked at the ticket for the first time and said "let us know if you have more problems"
As of yet, there are none, but I haven't put who's online back up either.