I can not believe hat he would have just left the scene without encouragement from his friends, but I might be wrong-he could have been really shaken up. His experience might be he is so used to relying on others for information and handling that he didn't know how to react to this(like a regular person would have)-and "lets get out of here" might have been a normal response to him. When I first heard about this I thought-oh he was probally going for help-but after seeing(no audio)the video it seems he was leaving the scene.