they should have see this coming as he must have had a drivers contract escape clause or rosberg would be sued for breach of contract
http://www.motorsportmagazine.com/op...s-then-and-now
maybe roisberg was pushed
https://www.quora.com/What-points-ne...iver-contracts
Length
F1 contracts last usually 2-4 years. The length depends on the drivers ambitions and visions of the team in short term and the teams will to hire the driver.
Revoke rights
The terms on which the contract can be terminated. Sebastian Vettels move to Ferrari was possible because of a such point in contract. It said that if he is not placed in a certain position in the championship standings by a certain date he can choose whether to end the contract or not. [1] Apparently the same performance clause can give the team the right to decide on the contract.
These are some of the important parts of the driver contract. There are many many more but I hope I didn't forget anything very important.
https://www.quora.com/What-points-ne...iver-contracts