The ease of responding to CBM is in large part related to its proper sequence in the various body parts. For a natural turn, the top leads the rotation and the hips follow, but for a reverse turn the offset would mean this sort of action would shove the lady off her feet. So in a reverse turn, the CBM shows up in the hips first, with the top following it.

That's the leader's problem. The follower's problem is remembering to respond CBM (and simple linear motion) by moving the body over the standing foot by rolling the weight through that foot, even before the feet being to seperate. This is especially true if the novel "overcooked" CBM is to be applied, since the direction of the step won't even be evident until the CBM is underway - put the foot out too soon, and you'd have to ronde it to the new alignment.

Thanks, that explanation makes sense.