Thanks I never new why he did that I always thought he was pretectong his flock I thought he seen me and thought I was some kind of a Predator for some reasonStop letting him control you. Don't back off. Keep moving towards him. Don't stop moving towards him till he gives up the challenge and turns away and walks off. That's the body language for 'Okay, I give. Do what you need to do.'
Make it a point to always make him move out of your way, no matter what it is you are out there to do. And never turn your back to him.