I always felt the OW would leave my H after he lost his money .. and I still think she will as soon as she finds his replacement.
The MLCers will do anything to keep from admitting they made a mistake. My H told me in February that he wanted to come home, but he didn't want to account to anyone for his mistakes. I think they are very frightened of facing the damage and being held accountable.
I will not predict when rock bottom will come. However, given the manner in which ex has defended her most recent life decisions over the last year, I think she will continue to spiral.