I honestly don't think he is going to get signed anywhere. He put up absolutely terrible numbers his last full season with Pats/Vikings/Titans. And the Pats have a hall of fame QB too....
I definitely do not think his job is in jeopardy. Every team does some form of this, it's not just Williams and the Saints. He did it with the Redskins, and the Saints. It is the goal of football for defenses to try to hurt the other team's QB or star player. That means they will probably win...