Don't worry, look at his facebook's page: https://www.facebook.com/secrethistoryofstarwars
for everyone wondering, NO, the site is not dead and buried. But it will probably stay down until July or so. It's a bit complicated, but hopefully when it re-launches it will be better than ever.
In any case, you can still access to a backup using the waybackmachine: https://web.archive.org/web/20141218083642/http://secrethistoryofstarwars.com/
His legacy is safe :) I'm more concerned about savestarwars.com, which is long gone. Here's a backup from waybackmachine: https://web.archive.org/web/20141218111044/http://savestarwars.com/