No. No, no, no. They'd be gone soon. There he could go inside. Call 911. Although then everyone would know he'd done nothing. All his future life would be bad. Forever he'd be the guy who'd done nothing (21).
While I think this thought would go through some people’s minds eventually, I think the timing of Kyle’s thought (listed above) says a lot about his family dynamic and mental state. His entire life, Kyle has had to live up to the expectations of his parents. With such a strict regime and their ability to take away all his privileges in a second, Kyle has frequently had to walk on egg shells. With this in mind, I think his brain is wired to always think about consequences. In particular, social consequences, like the disappointment of his parents or in this case, society.
The idea of disappointing others means a great deal to Kyle, as impressing his parents has been a difficult task leading up to this. While he was jeopardizing his safety in order to save Alison, the alternative seemed much worse to him. By not interfering, Kyle risked being a man known for his lack of action in a serious situation.
More than anything, I believe Kyle wants to be recognized. Recognized by his parents for his achievements in high school track and recognized by society as the sophomore boy who saved Alison Pope. With such little praise at home, Kyle is finding acceptance elsewhere.