“[Abusers] blame the world – circumstances, other people – for their defeats, misfortune, misconduct, and failures. The abuser firmly believes that his life is swayed by currents and persons over which he has no influence whatsoever (he has an external locus of control).
But there are even subtler variants of this psychological defense mechanism. Not infrequently an abuser will say: “I made a mistake because I am stupid”, implying that his deficiencies and inadequacy are things he cannot help having and cannot change. This is also an alloplastic defense because it abrogates responsibility.
Many abusers exclaim: “I misbehaved because I completely lost my temper.” On the surface, this appears to be an autoplastic defense with the abuser assuming responsibility for his misconduct. But it could be interpreted as an alloplastic defense, depending on whether the abuser believes that he can control his temper.”
― Sam Vaknin, Malignant Self Love: Narcissism Revisited
Patrick Watts 