Only, that didn't solve the problem and he looked more and more pathetic. We buted him, which helped for a day, but then he got more pathetic. I was at a loss, I knew it wasn't an abscess and we had cleaned his hooves out every day, so I know there wasn't anything stabbing him when he stepped, so I took video and posted it to our Facebook page in hopes that someone would know what was going on.
I was so focused on it being his foot, that it never occurred to me that it could be his shoulder. We continued with the Bute as needed and just let him be. Tincture of time has worked and he's still a bit gimpy, but not much, and started trotting around a few days ago.
It was a huge relief to find that it was his shoulder instead of his hoof. Shoulder injuries heal much better, while hoof injuries can be expensive and may never heal right.