I think Candiace left voluntarily. She was harassed constantly, pregnant and has plenty of irons in the fire. She also has a personality and a supportive husband. I mean, seriously, why would she stay? Robyn, on the other hand, is married to someone whose previous employer chose to buy him out rather than reassign him and have to continue to put up with his surly ass. Not only does he seem to be unemployable at this point, he can barely stand to have a phone conversation with her. Robyn also has zero personality nor does she have the energy to pretend to have one. My guess is if either one of them is asked back to the show, or offered some kind of spin-off down the road, it will be Candiace.