Well that is a point.
There were no England players on their feet so it wasn't a ruck, it was a tackle with offside lines. That means there is no requirement to bind. The guidance for Offside lines at a tackle is as follows;
Law 14: TACKLE
Player responsibilities
Offside lines are created at a tackle when at least one player is on their feet and over the ball, which is on the ground. Each team's offside line runs parallel to the goal line through the hindmost point of any player in the tackle or on their feet over the ball. If that point is on or behind the goal line, the offside line for that team is the goal line.
If you look carefully, you will see England's offside line is not the back of the England player on the ground; its the foot of the All Black (Tu'ungafasi ?)