Nobody we contacted knew anything about him, and I'm glad I was right about him being an American Warmblood... or id feel really stupid... hahaha Its just such a mystery! You don't brand horses like that for nothing right? Surely his breeder wouldnt have shipped him off to slaughter after branding him... So there must be another secret 2nd owner that isnt in the details, before his last one, that shipped him to slaughter.... This is turning up a lot more questions than answers.
I checked out the website and it looks like you have to have someone come out and inspect the horse before you can put an american warmblood brand on them.
From the American Warmblood Society page:
"Sport horses/Ponies must qualify to be branded with a minimum - 67% In-hand, approved Inspections or outstanding performance. Performance horse/ponies with a minimum dressage score of 63% at 1st level, test 4 (or equivalent in other recognized sports) also qualify to be branded."
Not to say someone just went and did it anyways, but it seems like quite a ways to go for a horse you're going to send to slaughter!