I breathed a really heavy sigh of relief when I went out earlier today. He's back to himself. How do I know? Well, there's a few things that let me know. His head was back up, he was energetic - and he grabbed hold of my coat sleeve, then my pant leg, easily avoided my swat, then stuck his tongue out. He sticks his tongue out to let me know he wants to play.
Those that say that horses can't communicate don't know Odin, Mr. Personality himself! He let me know he's feeling better! I guess I'll suffer through cabin fever without his company now...