The SPSI-R stands for the Social Problem Solving Inventory-Revised. The SPSI-R helps a clinician determine an individual's problem-solving strengths and weaknesses so that deficits can be addressed and treatment progress can be tracked. Your scores indicate (in part) that you tend to avoid problem solving, or to make impulsive decisions when it comes to solving problems. These scores will likely help your treatment provider come up with a treatment plan that is specific to you.
You mentioned that you are already on Prozac (fluoxetine) and this is a start. However, your psychiatrist may add another medication to assist in controlling the anger surges/impulsivity. Sometimes mood stabilizers are used for this. In addition, your psychologist may try to add some cognitive behavioral type approaches to assist in your depression.
As for your thoughts when it comes to being on top of a tall building (as an example) - these automatic thoughts occur to many people, actually. So it isn't outside of the realm of being somewhat normal. That being said, you might want to discuss it with your treatment provider as an example of some of the impulsivity that you feel. It's a good illustration.
Does this answer your question?