Looks dangerous to me, frankly. I've seen the performance by Tommie Turvey several years ago, when he put a fabric on horse's butt and fired it up. Horse had no problems with it (and no, it was NOT hurt in any way, I'd never even think about it seeing how he talks/treats his horses).
"Life isn't about waiting for the storm to pass: it's about learning to dance in the rain..."
"When we are no longer able to change a situation - we are challenged to change ourselves."
"How people treat you is their karma; how you react is yours."