.Very sorry for you and the little guy. I had a mare who had a wry nose-my grandmother rescued her as a foal when her breeder wanted to put her down because she wasn't perfect. She was the sweetest, most loving mare and never had any problems. We had her teeth floated once a year and she was good. Never had problems eating or keeping up weight. It's scary finding one of your horses has a 'deformity' but it's not the end of the world and in fact you may just love that horse more.
Here is our mare, Sweetie, pictured in her teens:
as you can see, her nose is much worse than your boys and she did just fine. If your boy does have a mild form of wry nose, there are very successful surgeries to fix them now if you do it early. It is more commonly seen in thoroughbreds and I read an article about the surgery on tb yearlings and 8 of them went on to race and the other 2 did not but did just fine as riding horses.
She is a sweet girl, Thank You for giving her a chance.. Thats what tic's me off there not perfect so put them down.. I understand in some cases, But if they dont have the heart to take the good with the bad or at least give them a chance they shouldnt be breeding... after your sweet mare I would bet they kept the mare and kept breeding her, with the hope it didnt happen again. Thats the sad part, I am sure she loves you - It seems when there are different or have issues there bond with there loving owners is even stronger - Thank You for seeing behond her issues