@DishingOutDone thanks for the head up, I'd actually spotted this thread and have PM-ed the OP.
My exh wasn't sectioned, he was taken into hospital overnight for tests after being picked up by the police.
Then he was transferred to the psychiatric unit where they initially discharged him as he refused to cooperate.
We went back later that night in exh's request and they finally admitted him overnight when he agreed to play ball and I refused to take him home.
He could have discharged himself at any time, but luckily close friends were visiting every day and persuaded the staff to keep him in (and him to stay in), not sure on what basis but again, he could have gone home at any point (which is why I had to move out of the family home in a hurry as the staff warmed me off the record that he seemed dangerous to me).
I was lucky enough to have already seen a divorce lawyer at this point who gave me excellent advice with regard to the children and custody and also "abandoning " the family home.
Divorce in france can be mutually agreed and fairly quick or for fault (expensive and difficult to prove) or if your h doesn't agree (like mine) you have to wait for 2 years to file after separation. But you can get an initial hearing to set up temporary measures, depending on how busy the courts are, this can take 2-8 months.
I definitely recommend checking the legal situation with an expert in family law.
Re abusive vs breakdown.
In my (sample of one!) experience, exh's covert verbal abuse hid a seething mass of hatred to me which was revealed and became a real danger when he had his breakdown.
They called it "décompensation" or a "bouffée délirante aigüe " which is basically a psychotic episode. Exh seemed coherent and rational to the staff but hid the details of his psychosis and paranoia from them. The friends who saw him were horrified by the anger he expressed towards me and were genuinely worried too that he would act on it if out of the hospital.
The breakdown was like an exaggerated version of what I'd had glimpses of before in exh. It wasn't a total transformation.
This is why I think being abusive and a breakdown are not separate things.
The filter was off, that's all.
As others said, grief can do bad things yo you but it is not an excuse to attack others and show no remorse at all.
Good luck op, and pm anytime.