Scuttlebutt in the office today from someone who knows owner says that the pin was dislodged at some point, resulting in the trailer separating from hitch. It's every horse owner's worst nightmare to lose a horse while trailering. My heart goes out to them.
"You can't blame other people. You can't always say what happened wasn't my fault, and you know what? Even if you have an excuse, shut up. "Bruce Davidson Sr.