The league owners voted to pass two rule changes Wednesday that will be seen as one-year experiments. The first rule is something that has been covered extensively and was expected to pass — automatic ejection of a player who receives two unsportsmanlike conduct penalties in a game. Coaches were opposed to the automatic ejection penalty, but owners seem to like the idea. The second rule that passed will essentially eliminate the need for teams to return kickoffs. The league has moved the touchback from the 20-yard line to the 25-yard line. Making kickoff returns safer is something the league has been…