I think Avie is burned out
Working for Steve Jobs must be a 24 hour job. The intensity, the drive, the angst. I think a guy like Avie, that less than 9 years ago was happy making his $ 70K and is now a multi millionaire, is putting his life in perspective. Perhaps 5 or 10 years from now, after he realizes how boring it is to spend "quality time" with one's wife or kids he will come back. Hopefully he won't be a tired dinosaur by then.
In the meantime, Apple is making much more money from iPods than from computers. So the iPod people are being treated with kids gloves, they can do no wrong.
Avie is tired and jealous. He liked Apple better before the iPod. Apple can now hire better people and he sees those brains knocking on the door. He used to be the smartest they could afford, now he sees the new whipper snappers. He probably has no management skills, so basically his own success fired him...he got fired by himself. The pathetic Wozniak phenomenom. Hey at least he is rich now sipping champagne in the south of France.
He also might be wanting to be his own boss. And a miserable one he will be, an order taker is an order taker.