I can use my hips to block a follower if I want, or get her to move if I want. When leaders learn this, they have a lot more options in their dance. When the leader dissociates poorly, the follower doesn't know what part of the man's body to follow. This is often a mistake of leaders when leading the ocho cortado - they strain their upper body to ask a follower to step through, all the while blocking them with their hips. In back ochos, little dissociation is needed because the change of feet has made it unnecessary. The woman dissociates, the man doesn't need to. Especially in close embrace.