I am not going to read the entire article.
It is pretty obvious the passenger has no leg to stand on.
The courts give the flight crew a lot of leaway when it concerns flight safety.
If the flight crew tells you to return to your seat, unless you are physically incapable, you return to your seat.
If you are not physically able, you inform the crew as to your particular disability and they they will help you return to your seat.
Statements like ‘one minute’ will not get you far.
no leg to stand on
and no stool to sit on