Okay, I understand that she is in pain so she is being aggressive. But I don't understand why the male is attacking the white hen.
Could also be stress, he is letting his anger out on your white hen because the other one is refusing to mate with him. I've made the experience that it is like a chain reaction, one foul apple infects the rest of the flock and soon there is mayhem until the aggressor or the source of aggression is gone. But that is just me guessing. I don't know anything about bumblefoot, sorry.