Well, in fairness to Jr... it doesn't sound like an act of malice, or even intentional... just an accident.
I was going by the previous description of his disposition. Only 2 men could ride him. He bit whoever got close. He refused a jump, threw his rider then jumped on top of him. It didn't sould like he was having a bad day but had a bad attitude. I would have put him down before he hurt or killed someone else. If the family chose not to, I respect their decision though.