No it was a server, I can't see why a server would kill a card. Probably just its time to die. The same is happening to my card right now, except at log in screens is black bars that take a few seconds to go away.
If your hosting the server via while playing the game at prolonged hours back to back then it could have also over heated and caused some problem that way.
Otherwise if your hosting servers on a different program than no your card just dies of "natural causes"