Not a pilot, but could someone explain why, after an RTO due to a major engine malfunction (presumably made aware to the flight crew both by cockpit indicators as well as external noise, vibration, etc.), remaining engine shutdown is not the first thing on their checklist after parking brake set? Is it because there are things like flaps down or spoiler restow that are needed to configure the plane for an evac? Or were these guys caught flatfooted by the severity of the situation and still thought there was no fire or other emergency situation?