I'm sure the founders, Mark Winter and Jonathan Cainer, would not want to see their baby die. If the site was made unavailable deliberately they would have changed the home page, which is still there.They have previously asked for technical expertise in supporting the site, which is unusually written using Lotus Notes (fine software, but not that widespread for private website development). It may be that some technical problem has arisen, and no one is available to fix it. I'm sure, being the dedicated devotees the site owners are, they will sort it, unless they are in India following their guru around of course.
John.