Why did Microsoft sack its CIO?

Heard of Stuart Scott? No, not the lazy-eyed Stuart Scott of ESPN fame, but the wandering-eyed CIO of Microsoft fame. He's been sacked from his chief information officer job at Microsoft after joining the company in 2005. Microsoft will only say:

We can confirm that Stuart Scott was terminated after an investigation for violation of company policies, and have no further information to share.
Sounds ominous ... and Valleywag-interesting. Do our beloved and knowledgeable readers have further information to share ? Update: One tipster has a theory .