Legit my friend and I were near a coil-head, he let himself be sacrificed so I could exit the door with all the objects we took, only for him to get necksnapped by the Braken, and I didn't even get onto the ship because SOME people decided to chicken out and take off because of some blind dogs outside. I was 1 foot away from the ship.
one method to get rid of the coil head is to lead it into a room with a door then go behind it and close the door. It takes awhile for it to be able to open the door but if you're being chased by 2 coil head then the method still works but the door won't hold them down as long.