In answer to your question, John, there is more than one style of AT. Yes, when dancing apilado, there is less of a "push" off of the standing foot, and more of a "falling forward".
Most "close embrace" dancers, however, don't dance apilado, even here in "close embrace" Portland.
I have to use some names to specify what it is I'm talking about
Yup, but it's not so bad once you realize that it helps minimize miscommunication.
Apilado IS in many ways a very different way to move.
And, as I've written many times, I love it. If I restricted myself to apilado only, I would dance even less than I do now.
(My apilado has more energy than "milonguero", if you want to engage in the stereotype of an old guy plodding along, which is what most people do. This is based on what I hear in the music. There actually ARE times that I dance with little energy. That only happens when there is little energy in the music.)
As the embrace "opens", the posture becomes less forward, and less and less weight is shared, where does the movement begin? The standing leg/ foot presses down and back to move the body forward.
AT is shrouded in myth, "New Age" concepts, and babblespeak.
I'm beginning wonder why some of top AT people who were trained in ballet, modern, etc, don't do a better job of explaining things. Maybe they realize that the "romance" and mythic aspects sell better to the people that come to AT.
Anyhow, don't want to get too far away from "being grounded".
P.S. Someone else wrote that a teacher pressed his free foot onto the floor to help him be grounded (as I remember it). As I wrote, I don't do that, although it LOOKS like I do because the foot touches the floor. Just another tango illusion.
P.P.S. Looks like I misunderstood the bit about the free leg being pressed down.