This video describes how to move the elbows properly in the backswing.

The elbows are not “against” the body. The elbows fold on both sides during the backswing and the through swing. In the backswing, the trail arm folds as the lead arm stays straight. In the through swing, the lead arm folds as the trail arm straightens.

In this video I discuss how the arms and shoulders work correctly in an ideal Single Plane Golf Swing.