I can relate. My brother was and always will be an inconsiderate prick. We did not part ways as passively as the Slade boys. I broke his nose and we both lacerated each others face with our fists. We're both musicians as well. We played together and it could no have ended soon enough. You cannot play music with family. They will always be standing next to you taking for granted your presence and efforts. There is always an attitude amongst family members who play music together that you are supposed to give each other what ever the other one needs. That falls apart one or both are narcissist who exist for themselves to the exclusion of their blood. Too bad Caleb didn't break Isaac's nose. It sounds like he needed it.