Thank you to all for your thoughts on this. I thought I might make it clear that while I detest any person outright mistreating their horse, I do not condone pushy, disrespectful horses either. I simply will not tolerate being told what to do by any of my horses. If I correct, I do just that. I get in, get the job done and get out. I don’t nag and I accept that I need to keep a lid on my frustrations if I want to maintain a relationship with my horses based on respect and trust. I always give my horses a chance to do the right thing using a light signal (just body language). If I do not get the answer I want, I increase the strength of the signal using other aids until the horse responds in an acceptable way. When I want to increase signal strength I’ll combine the movement of my stick with my body language. On rare occasions the string on my stick has made contact with the horse’s hindquarters since I don’t allow my signals to be ignored. Again, I say what I have to say, once...and get out. That’s the process I use when I know the horse is capable of easily making the right choice. If he is not capable of easily making the right choice (e.g. If learning a new exercise) then I may need to backtrack the training to the point where the right answer comes easily. I’ll continue to ask for more as he gets better. This builds his confidence and trust and in the end progress is faster.
They spend so much time in what I call "the grey" area. The horse learns to tolerate the grey area, something which horses don't normally like. They like things black or white. But, if the trainer always goes through step one, two , three, four, five, six with the same speed, intensity , that is a LOT of gray before the trainer actually expects a result .
ETA and I should be honest and say that I am guilty of this kind of nagging from time to time myself.