Congratulations! We are in a similar situation right now, but from the voluntary layoff side of things.
My SO's job got so bad he had an anxiety attack back in December (which is incredibly unlike him, he's very laid back). He took a long weekend over NYE and went back after the new year. 2 days later, he texts me, "I don't want to work here anymore, will discuss when I get home." That night, he's telling me how awful it is, and I said, "You know, you can quit. You don't have to put up with this. You don't have to wait to find another job. This is why we have FU money." He hadn't even allowed himself to consider it until I said it out loud, but as soon as it was out, he was able to see the light at the end of the tunnel and it totally changed how he felt.
His last day was last Friday, and we're totally fine on my paycheck. He's already had an interview with a headhunter, so I doubt he'll be unemployed long, but even if he is, we're fine. And it's all because of MMM.