Holt's dramatic winner against Reading sealed a move that begun when chief executive David McNally hastily threw a loose ball back from the director's box for a Norwich throw-in.
And there was drama when the ball bounced up onto Emmanuel Eboue's arm in the Arsenal box - prompting frantic appeals from Bolton for a penalty - but they were waved away as the Gunners sealed a deserved win to move five points clear of the Trotters.
The Foxes sealed the win when a superb team move saw the ball break to King, who finished smartly from 12 yards as the Owls slipped into the bottom three.