You know, on an early trail ride, right after I bought Caisson, he scratched his head on his leg, and scratched the bridle right off his head! Yipe! I pulled on my "piece of string", and he very politely stopped. The friend I was riding with commented that "as responsive as he is, you could probably ride him in a sidepull". :)
So ... my first ride on him, we got to vet check 1 in about an hour, trailing flames.... and I had him in a bit. :)