Steve,
I think Mike hailwood did as well, was it roger williamson left by the marshalls to burn while Mike attempted a solo rescue, Having said all that marshalls are well trained, but, as a medic who's witnessed and attended all types of accidents and medical dramas, ITS F***ING scary and we all freeze at times,
Roger Williamson was in the car (died, poor sod) and David Purley stopped his own car and attempted to upturn the inverted car and rescue his friend. The race continued and marshalls were rather slow (to say the least) in reacting to the accident.