In the spirit of keeping MA and Video on this part of the index I copied my last post here.
After I begin releasing, I don't feel tension in my hips, even if I'm holding the counter.
I just threw this together for the topic, but you can see "I hold my counter in many of the arcs until my legs start to retract and cross. No pivot results. You may feel you have to reach neutral before this; everyone is slightly different. In my demonstration here, no pivot results. I don't have that issue, so I can delay counter without pivoting. I think it has to do with holding the edges connecting to the snow using your feet, while the skis are releasing from the edge angles. I don't feel coming to square after my skis are flat; creates a pivot for me in my transition, on this slope. As long as the movements are not too quick, rushed or over energetic. If you slow down WC slalom, in tight arcs, you'll see the same. Not so much in GS.
However in power and crud, I concentrate on countering at the beginning point of flexing, when my skis are releasing. As I said in my first post, some versatility for each situation is built into the system.