
Rather than put either of your dogs through what is still surgery, however 'simple', I think you have to decide whether the disruption caused by taking in this extra male, is worth doing, or whether for the sake of everybody, it might be better to contact Husky Rescue who may well be able to offer a good home for this boy so peace returns to your household.
Castration only prevents unwanted litters. This is the ONLY guarantee. Clearly you can't carry on having to crate one etc.
I had to give in when one I'd kept to show, started challenging his uncle by the time he reached around 2 years. I tried my best to get him to settle down again but he wasn't having it so in the end, I found him a super home and peace was restored to our small pack. I hated doing it because once we kept a puppy from our litters, they stayed to the end of their days. This was just one too many!