Same thing happened to my dad many years ago although he was leading the horse with a deer on top of the saddle. The horse just planted her feet and stayed put until he could get the cinch undone to resaddle her. You don't find too many like that.
They know how to take care of their riders. In rough or icy trerrain some horses know how to fall, they know they have to keep the riders on their backs at all cost. The horses I can't stand, and as far as I am concerned should be in a dog food can are those POS that spook and use it for an excuse to buck their riders off.
