I've been working with NBCSports.com on a series entitled "Ask A Lawyer" (without the excessive billing part that comes along with it).
Part 1 is entitled "Ask A Lawyer: If a player has a contract, how can the owners cut his salary?".
In it, I explain why rollbacks are in fact not unlawful - even in the face of a signed contract. I also address why escrow can look a lot like a rollback under the right circumstances.