There are no 15 million dollar contracts at Lotus. He'd show more mettle if he did what he said he'd do which is not drive for another F1 team after Ferrari than to go the Barrichello route. He can at least say with dignity he was more decisive than the scuderia.
Interesting that you mention Barrichello... Maybe Williams would want him? Neither of their drivers are doing too great... but then the car isn't any good either...
I think Williams would be a good move for Massa. A team with a lot of history.
I doubt Massa will be able to go to a team where he can win races, so he'll have to look at what else he can bring to the table. It seems like Sauber would be a good move as well.
Sign him for a couple of years, if his little bum gets handed to him on a platter by his new team mate, give him the option to retire gracefully.