Here is their response:
"Hi everyone. I understand the questions you all have. I hope you understand that it's a bit overwhelming to try and answer everything in real time. After tonight, I'm going to ask Jake (or Jacob?) to field your questions and funnel them to me for answers. Then we can do that in an organized way. But for now, I'm going to try and answer some that I thought were most important."
First, why the secrecy?
"MS knows who I am. That's why I'm not concerned about self identifying to them in these postings with details only they would know, as some here have pointed out. The people who founded Xbox hw number 10. 1 left to go be the VP of manufacturing at Qualcomm, 1 left to go be the GM of engineering at Zune, 1 left after only 2 months in '99 due to conflicts with toddhol. He works on Surface now. The rest still work on Xbox. I am the only one who left the company entirely."
Updates:
This is the same site who first said Bungie was leaving MSFT.
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THIS IS THE LINK.
I link to the main page by accident last night.
http://www.8bitjoystick.com/archives/jake_confidential_xbox_360_red_ring_of_death_source_responds.php