What did Carl Jung mean by "subjectivization of consciousness"?
Reviewing Jung’s nature of objects the object for which the introvert becomes alienated is the item, topic, or nature that is causing a subjective reaction. This in keeping with the struggle of maintaining a proper distinction between the self and ego creates a confusion toward which is “steering the ship” so to speak. That is to say which is the 


  perceived subject of the psychic process


This subjective experience of consciousness causes a withdrawal from the “object” in question. 

I like to think of this withdrawal as a form of cognitive dissonance  as the inconsistency between what is expected to be felt or perceived as the correct feeling versus what the actual feeling toward the object is, causes mental discomfort changing the perceived attitude towards the object. This is a loose association but allows some abstraction towards the question at hand.