In this case, I doubt is anyone could, would or has thrown it in The Federal, state or local court. The authorities were more than cautious in looking at the possible consequences. They gave them serious advanced warning and had buses, trucks lined up to take the invalid, disabled, elderly and indigent (big word for poor, crippled and crazy) out of town. At that point, you only had the "brave", the stubborn and the "doubting Thomas" types left. Unless you are really a closet socialist - then you have to accept that when an adult makes a bad decision, of his own free will, against offers of assistance. They better be ready to take the fruits of their stupidity. The Authorites did what could be expected of them. Reported the facts, acted in good faith (for a change) and took steps to help those that couldn't help themselves.
Some of the the ones that stayed may not have looked far enough into the future. Survial is not just the immediate threat, its dealing with the aftermath that really is the kicker. Its not just the storm, its the lack of stores, running water, food (no stores will be open until the power comes back - in weeks or months, not days), transportation, blocked roads, all the "little things" we take for granted everyday. Can't blame that on anyone else, once you been warned and given a free ride out of harms way.
On the same note, sometimes these Heroic efforts to save people from stupidity might be causing more idiots to defy common sense. Don't know about you, but I'm getting just a little tired of reading about idiots trying to row accross the Pacific ocean, solo ...getting a Parade - the later the inevitable Coast Guard search and help when they are barely out of coastal waters. You laugh when some rich idiot does it and fails, but when someone with no means, no skills and no training tries - its 1 in a million that they will found alive, with out emergency assistance. What emergency, the effort was doomed from the start - PPPP, a successful outcome is reversed, a million to one.
Glad to say that our leaders learned a cruel lesson, late, but they learned. That is remarkable!