Quote from sle:
Obviously, I don't know the exact details but I heard that he was "alowed to resign" (instead of being fired for cause) so he got to keep his unvested stock. I guess thats what they referring to as "back pay". It was a management-approved trade, he was simply structuring/executing it so it's fair. Also, he probably had a lot of interesting things to share with the world had they decided to actually wreck his life by firing him for cause.
To be frank, I doubt there was ten million dollars worth of unvested stock (he was an executive director, not even an MD), but if there was, it's not worth much by the time it vested. The stock was worth 65ish in 2007 and over the next 3 years it went to 20-handle, with a nice little stop around 10 in 2008.