I would assume that with the number of officers on scene there could only be a limited number who could physically attempt to free the pilot. Others may have busied themselves securing the scene. It wouldn't have taken that long to put that tape up. Again, others may have been in the process of contacting the rail authorities to stop all trains. For sure that train was travelling at considerable speed. No doubt the facts will eventually emerge but I'd like to believe that pilot extraction had begun whilst others put the tape up.