I agree with those who have said Jenny and Sherri were most likely fired. To me, the tell tale sign is the way the two of them, along with Donnie, took to twitter to show how happy they were with all of it. If they had chosen to leave, I don't think they would have been so vocal about their excitement over it. It seemed like a transparent "save face" move. I kind of remember Leah Remini and Holly Robinson doing the same sort of thing when they were let go from The Talk.