This says that any officer or office holder (mayor, etc) who orders gun confiscation is no longer in that office, he is not then not an officer, they are "fired". Confiscation is illegal even in an emergency. If an officer or office holder so orders, they are not acting in capacity of their office. So, you may resist legally, and are not "disobeying a law enforcement officer", because he just gave up that protection.
There is a bill in Lousiana now, I understand, adding language to their emergency powers laws that forbids gun confiscations.
This needs to happen all over the US, for it to be made clear that a disaster or emergency is not an excuse to nullify the Bill of Rights.
If this had been the law in Lousiana during Katrina, and it was widely known, a lot of CHP's would have gone home in body bags. But more likely, it never would have been tried to begin with.