By the time I got home, the friend had arrived, in true cavalry fashion, and things were in hand. The horse was behaving better, and showing interest in food.
We spent the sunset dealing with horse business, but watching as the sky went through a spectacular display of colors. Probably the best sunset I've seen all year.
This morning, Yogi (the horse in question) is better, though we stayed up much of the night, keeping an eye on him.