+Vigano is clearly struggling with the implications of this Crisis. On the one hand he calls the Conciliar Church a counterfeit, refers to the Holy See as occupied by the enemies of the faith, and calls the Papacy disgraced. But he's afraid to take the necessary first steps toward extirpating these imposters from the Church.
If indeed there were a situation of a heretic Pope, the process has to being with SOMEone calling it out. SOMEone has to be the first one to come out and declare the See vacant. SOMEone has to declare Bergoglio illegitimate. Oh, but he he doesn't have the authority. Well, then, who does? He can't unilaterally declare him deposed, but he can begin the process whereby the Universal Church repudiates the imposters, and separates Herself from them.