Psychodynamics is the systematic study and theorizing of psychological forces acting on human behavior, emphasizing the interaction between conscious and unconscious motivations. The original concept of "psychodynamics" was developed by Sigmund Freud. Freud suggested that psychological processes are flows of psychoenergy in a complex brain, establishing a "psychodynamic" on the basis of psychological energy.
In short, a psychodynamic view of a problem indicates that this problem may stem from a conscious and even unconscious aspect of the patient. In the case shown in the question above, we can state that the therapist endorses the psychodynamic view of schizophrenia because he believes that this problem stems from some unconscious aspect of Tom's mind related to his childhood. This therapist believes that this aspect arose to avoid the conflict of overwhelming sexual and aggressive impulses.