I think Vale left Yamaha cos he never ever liked Lorenzo too much, that is why it is a bit curios to see him going back to the roots again. However, Vale said a couple of days ago their contact was never as bad as the press wanted to show.
Quick edit: the third answer sounds correctly as "No, cos he would have needed to support Ducati for some more years".
Edited by FerrariAlonso, 10 August 2012 - 12:22.