Did Issac Hayes quit South Park or did someone "quit" for him?

[Hamlette]

My source on this is Fox News and I've not heard another source, but this guy says:

I guess people missed this on Monday, so I will again state Isaac Hayes’ case. He had a minor stroke in January and is now at home for rehab and recuperation.

As close friends told me over the weekend, he did not resign from "South Park" or issue any kind of press release to that effect. Although headlines like "Hayes Gives the Shaft to 'South Park'" are funny, they are inaccurate.

Here’s the problem: Hayes is no longer managed by Bruce Garfield at Avenue Management. All of the communication from him comes through a woman named Christina "Kumi" Kimball, a fashion executive for designer Craig Taylor, another Scientologist.

snip

Before the public and the media buy this whole brouhaha, I beseech everyone to take a step back and see what actually went on here. Many times, things are not as they seem. And that is definitely the case with this story. The only good news in this story is that Isaac, according to friends, is doing very well. He’s attending to business and getting back on his feet. Hopefully, he’ll be dishing up Chef like a gourmet again in no time.
http://www.foxnews.com/story/0,2933,188720,00.html

near the bottom of the page. I want to believe Issac was a tool of the Scientologists so I'm kind of following this. But then I heard they killed him off last night????