It sounds like sharia finance. They cant pay interest so they call it principal even though they are paying more than the original amount borrowed.
Catholics want to divorce so they get an annulment. It is still a divorce.
If corrupt bishops move to supposedly nullify holy marital vows, it's a mortal sin on the part of the bishops and it is contrary to Canon law as well as contrary to Divine and Natural Law. Just as it would be a violation if, under the present arrangement of Canon Law, corrupt marriage tribunals presumed to "dissolve" validly-contracted marriages.
The law still stands ---- and will always stand --- which recognizes that a valid marriage requires exclusive sexual fidelity until death. I.e. no "second "marriage".