User blog comment:Vivaporius/AT Idea: Imperial Civil War/@comment-3341288-20120407225817/@comment-3398633-20120407232049

That's the issue. The Emperor's "miraculous" recovery (still on-going thought), raised a few eyebrows amoungst the High Lords and the Ecclessiarchy, who's power relies completely on the belief that the Emperor is a god. So his recovery pretty much screwed him over.