As far as the kid losing his temper goes, John Hagee said,"I lost my temper one time and my father helped me to find it."
I told my son when he was in the rebellious stage of his life that I would beat him to death before I had people saying that I raised a criminal. He has done well in life since then.
The child is displaying rage. You can’t beat rage out of this child. Pretty easy to beat more rage into him though.
This freakish behavior doesn’t respond to discipline. The child needs major intervention to avoid a lifetime of monsterhoood. The family members are in genuine danger. If the child treats his mother like that (and she has the power to resist), just think how he treats his siblings; those kids live harrowing lives of fear and it grows along with their tormentor.