I think that I have the answer, helped by Ian's answers, especially his last: the first sign that your horse has lost his inner ok-ness is a loss of his ATTENTION being "centered within himself", as Ian said, as well as his attention being with YOU, as Ian likewise said. Dr. Deb Bennett calls the horse's attention the "birdie", which is a good description, because the only time that the horse is ok is when his birdie hasn't flown off yonder. So we must be perceptive enough to see that his attention has flown to something in the environment, prior to any physical sign or action.
I wasn't perceptive to my horse's attention shift, before he spun his 180, e.g.
If any disagree, feel free to comment.
Last edited by Northern; 12-19-2012 at 11:38 PM.