Ed4032 beat me to it!
Have you ever considered running for governor? A coyote running toward a human being is definitely not normal behavior. Instinct tells a wild animal to beware and coyotes are one of the most wary. Rabies is the most obvious cause and a rabid animal can appear healthy. Guarding a kill or pups could be a possibility or maybe you look like Gov'nr Perry. My father was in India during WW2 where rabies was almost epidemic (he was bitten and had to take the preventive vaccine himself) --- any way he told me he toured a hospital and the staff would clap loudly to show how it stimulated convulsive behavior (he called it torturing the poor victims) so if you were making enough noise that could've been a stimulus. Have you contacted the gamewarden or health officials to get it tested? Good shooting on your part may have saved you from the dreaded preventative measures. There's not as bad as they used to be but definitely not fun. I found a racoon in one of our stands this year and no matter what I did to get it to run out it wouldn't. It didn't growl or get into a hostile posture. I finally had to shoot it with my CCW. There was fresh "guano" inside the stand indicating it was eating so it probably wasn't rabid, but it could have had distemper which will cause odd behavior in coons.