If we are to take anything on "basic face value" as suggested above, we must do so exactly as written and assume that terminology used doesn't create obscure or unusual definitions that would be beyond a common person. So on basic face value, No provision of FCC regulations prevents an amateur station from using any means of radiocommunications at its disposal to provide essential communications needs in connection to the immediate safety of human life and the immediate protection of property when normal communication systems are unavailable.
You could argue that normal communications were unavailable because someone didn't have their cell phone within arm's reach, but that would make you a weirdo. It seems in this particular incident, the relevant questions are: Was life or property in danger? and Were normal methods of communicating unavailable? I haven't read anything to indicate otherwise so I'll assume both are yes. I'm also going to assume that some standard procedure was followed, and the initial call was logged and comms tech/dingdong was instructed to clear the channel or monitor another channel (or method) should someone wish to contact him. That should have been the end of it, but for reasons known only to him he intervened on public safety comms at least 7 more times. IMO that makes him a moron, who deserves more than a strongly worded letter and fine which may or may not be enforceable. Finally, if he really was just concerned about his own equipment burning per that other thread, he should have paid a private fire protection company to get a truck up there and stayed off the radio.