Great flash but. . .
your dream means nothing. Freud was th only psychologist to put any weight on the contet of dreams and most of his theories have either been disproven or can not be tested by scientific means. Basicly when you dream you brain activity is most like it is when you ar awake, the rest of the time at night brain cells "fire" in a synchronized manner. So when we dream its more like the brain thinks the body is awake, this is why some people sleep walk (the body is normaly paralyzed in dream sleep). What your dream basicly is nural pathways that code for those stuimuli (volleyball nets, trees, running, ect) being activeated and your brain trying to make sense of it.
What you should do tho is take a positive message from it anyway even if it has a strong physiological basis. I like how the man or you eventualy no longer feels fear of an impending doom because they didn't give up and faught through the pain of running. May that line of thinking will make you tronger in your everyday life. I actualy made my NG profile to tell you this because I have an intrest in psych (its my minor) so I should thank-you. Finally keep up the good work.