"Kevin Rose back in the drivers seat" would have worked well. It seems to me that's a pretty rare occurrence, with a founder taking the reigns again after several years. Good for Digg!
EDIT: Although reading through the techcrunch article, I'm more convinced I'm correct.
I actually met Jay last month and he mentioned a few times that he was perpetually tired (he lives in NY, but works at Digg's offices in CA), although he also seemed very excited about the future of Digg, so it's a bit surprising to see him go.