Holding the angle in your wrists is an effect not a cause. The momentum in the weight of the club head as you swing sets your wrists. It is also that same momentum that unhinges you’re wrists at the appropriate time in the down swing. If you try to hold off an angle or a motion. Likely it won’t work consistently. So the key is to understand what holds the angle. Again it is an invisible force that does it. And that force is very consistent in how it works.