First off, great selection of tunes man!
These are tips that some of my friends have told me to try over the years. It appears you are carving regular, so on a heelside turn, look uphill and try to keep both of your hands in front of you so that you can see your right hand in your paripheral vision.
Next, in a heelside turn, with your right hand, start out by trying to touch your lead/left knee. And as each heelside turn comes and goes, try reaching lower. Next turn, try reaching for the upper part of the lead/front/left boot cuff, and so on and so forth. What this will hopefully do is to get you to feel the pinch in the waist and more importantly lowering you center of gravity which will increase edge hold.
Hopefully, I am correct in my explanation and this will help out! And if I am not correct there wil be no shortage of people correcting me! :)