Make your normal backswing then slam the toe of the club into the sand. And I mean slam it! Once you feel impact loosen your grip pressure allowing the club to rotate in your hands to a squared position.
And let me add that Drawback is the antidote to three-putting. It gets you so focused on knocking your first one close (if not in) that lengthy putts become much easier to get down in two. (Plus you don’t have to draw “em back when you’re out on the course.)
Understanding the parameters of a problem is the first step in turning a weakness in your game into a strength so let’s define what we mean by tight lie. My definition of a tight lie is when the golf ball is sitting with an eighth of an inch or less space beneath it on a surface so firm you can’t take a normal divot.