User blog comment:Eddienam/Chapter 53 mystery/@comment-76.31.149.155-20140107225713

My theory why eren became enraged when he remembered his father is that he probably killed him in an accident.Think about it,his dad must have told him to try to turn into a titan after the injection,and as soon as eren transformed into a titan he went berserk because he wan't in control and ate/killed his own father.