Any priest, or lay catholic, can, and should, disobey an unlawful order that harms the sacramental life of Catholics.
If a priest wants to say Mass in a park or in someone’s home, that’s one thing. But the priest does not own his parish church, and will be subject to removal by the police if he defies his superiors by holding services against the bishop’s wishes.
If a bishop suspended the obligation to attend Mass in response to a natural disaster and ordered the churches in his diocese closed to prevent anyone from venturing out to attend Mass, one could argue that he is "harming the sacramental life of Catholics", as people would not be able to attend Mass or confession at that time.
But the bishop is concerned with both the spiritual and physical welfare of the people in his diocese. People (at least, those of us outside of the SSPX) recognize the authority of the bishop when he makes such a call. And while the closing of a church make not make much sense to the person who lives next door to it, the person next door to the church presumably has enough of an imagination to realize that others would be driving 30 or more miles to get to that church.