Beerkan (DayZ)

Can someone explain how every player on a server not only got kicked from the server, but everyone got killed as well? I managed to grab this image on my phone as we all got killed. I had my fully packed character killed through no fault of mine. Surely it's wrong that a sysadmin can kick AND kill your character. (Sorry I forgot to get the details of the server that I was on when this happened)