What’s “Ad Orientum Worship”?
Couldn’t determine from the excerpt.
The priest, when saying mass, facing “toward the East”, or Versus Deum.
As opposed to versus populum, or facing the people.
Basically the priest facing toward the crucifix, the same direction the lay parishioners are facing.
Facing in solidarity with the congregation.
To face toward the east is to anticipate the direction from which Christ Jesus will come, when he “comes again” (the second coming).
Please check out this short video.
A priests helpfully explains and discusses Ad Orientem.
https://m.youtube.com/watch?v=gsX9gJC1otc