The page, Alienation , describes intrapsychic alienation in detail. Subjectivity dissociates itself from the act of D-intentionality by inhibiting its continuation. It disowns its own act of D-intentionality. The alienation is the consequence of inhibiting of D-intentionality. Intentionality, we know, is persistent, continuous, not digital or bursty.
Normal intentionality is terminated by object consumption.
It would perseverate forever, just like wishful thinking does if you don't put a stop to it. However in this case, subjectivity terminates D-intentionality by alienating itself from it. This is the fundamental act, the inhibition or termination of D-intentionality, called alienation, that creates objects. If there is no objectivity, you have only one entity, subjectivity. That thing is no longer part of subjectivity, for it has been rejected.