Excessive Disengagement of the Hindquarters: What does anyone know or think about the potential for adverse effect(s)?

Hi, Leslie, I have you heard you speak several times on the complications for a horse who has been exposed to too much training in disengaging (stepping over, engaging) the hind quarters.  You have said that this can lead to an unbalanced way of going with the hind feet single tracking as if on a tight rope, and also lead to counter-bending and problems when turning.  Clearly, it is necessary for the horse to understand a request to step over the hind quarters for many maneuvers including side passing, shoulder in, haunches in, leg yield, etc.  I have heard many clinicians advocate repeated practice of “disengaging” the hind quarters saying “you just can’t do too much of that”.  Many clinicians also train this movement as part of the “one rein stop.” How can we find the balance between doing too much of this and experiencing the negative consequences that you have spoken of, and building in a clear understanding in the horse so the horse will respond softly and accurately?