Watching the new video. In my opinion it separates way more than is needs to. It's defiantly out of rebound travel and topped out. Compare the latest video to your earlier post with the rear axle hanging. Are the new shocks shorter at full extension than the old shocks? Separation is dictated by front pivot location. In your case the front spring eye. Without lowering or lengthening that point you can not reduce separation. Lowering the car will lower this point to the ground. But this is not a total cure as the center of gravity is now lower as well. The front eye mount needs to come down, NOT UP. Your only other alternative is to tighten the rebound slowing the separation. At this point air pressure and shock adjustments are a crutch to try and correct a instant center location that is to high and shocks topped out in rebound.
Doug