Check out this link.
The horse here Shadow was a bad character. He had been sent out for training by the previous owner with no luck. He continued to buck, to runaway and refused to be broke.
He had 100's of miles under him and still he was almost impossible to mount alone and refused to submit.
This is the day he submitted and never caused a problem again.
This is all I did, a short video taken by someone watching but this was the end of him being a jerk and I wear no spurs or carry a whip. The only thing I have is the curb.. He stayed in this for a few weeks and then dropped to a mild training curb.
Strider is my old endurance horse