Back to the question: Yes, you must get the inside leg out of the way. The more weight you put on the outside ski the more it will bend and the more it will turn you. Look at a photo of any great racer. Their inside foot is near the outside knee. Pulled way up and pulled way back. I strongly disagree with trying to get angulation from the knees. As one with gimpy knees, the knee is not made to bend sideways. Keep a bit of sideways flexibility available in it to absorb shocks. Inverting the inside foot (tipping it toward its little toe edge) impels the body toward more angulation. When one is properly angulated and countered if the skis hit an icy patch the body stays balanced over the skis as they skid. If inclined the skis skid out from under the body and you go...splat! The feet should be spread wide only if one is going fast enough to need to tuck.I think I should be shortening the inside leg (and/or lengthening the outside leg?) more when trying to carve medium to long radius terms - to get more angulation vs too much inclination, but not sure how to think about / approach it. Do people have good drills and/or cues for focusing on this?
Here's Marcel Hirscher, maybe the best skier in recent years. What is he doing that you should be doing? Note how his skis are going to his right while his hips & chest are aimed to his left.