Indeed. That woman who was unarmed, whom he was demonstrably able to move about with little effort against her will was indeed a threat to his life. Any agreement with his decision to use potentially lethal force against a woman who wasn't armed and who was incapable of mounting any considerable ability to resist him is clearly well-reasoned, rational and totally supported by reality.
His life was in greater danger by his standing partially in the motorway than it was from her kicking his butt. His life, roughly equally to hers incidentally, was in greater danger by being simply between his car and hers than it was from any ability she had to threaten it.

