I agree with both Himind and Bliz,this is very unlike Sir Russel. I kinda of take these post as one of his joys. I too wish him well.
I did a quick look around the net and found nothing in the news that would effect him. IE no major storms, power outages, Forest fires, or bomb threats. But it still might be something like that. Hope he's well. Not to be a pessimist, but anyone that knows him a bit better could do a more detailed search.
Hope we find him well, and just distracted by a pale ass and ready flogger.