What other options did he have? He is getting ousted from Tech 3 regardless. Either end up on a satellite bike, or take the payday and hop on the factory machine. Either way I'm sure his results will suffer, at least with the Duck squad he has a 2 year contract and maybe they can make the bike competitive in that time.
Absolutely. Get paid.
Hopefully with new ownership at Ducati, maybe they can shake things up, take some risks, try new things.