I've seen videos of vaxed people, and animals, doing a weird look up to the left as they spiral and then fall down twitching and die... but I can't find anyone talking about what causes it (besides generally blaming the vax).
Was it covered in the Died Suddenly Documentary? I didn't have the stomach to watch the entire thing...
Not the smoking gun she made it out to be, but still interesting to note from 2017. Chapter 19, page 23-25 in the ebook