It seems he's going mental but in denial. Senile as they come, emotions they can't control, their reaction is soed by their hormones. Affliction, not deserved but life leaves none in the reserve. It's up to the parent to see, it's his emotions and not his attitude. It's your job to keep them at a comfortable latitude.
“When your kids are going through puberty it is important you understand their emotions first and then their attitude.”