Michelle's not in the game for politics. Barry was in only while it made his ego feel good. Now that things are going south in a rush they'd both like to get out. Other forces won't let that happen unless things can be manipulated so as to retain power under any 'rat successor.
She was always in it for the perks and money, also she is a huge attention whore. Now that she’s criticized, harshly and regularly, she isn’t liking it so much anymore. Obozo is self destructing. He’s a pathological narcissist on a road to self destruction.