Sorry, for so many replies, but I know how you can see what I'm talking about. To do that just press left and right (or a and d) very fast. You will see that the part of the brain looks at the middle and the lengs don't move. Now in the bug I was talking about, you don't have to do that: the part of the brain is always in the middle.
The many replies are no problem, it's great that someone is invested enough to help out. The finishing animation is done so weirldy for time's sake, but I do admit it's really glitchy and weird. I couldn't find the last bug you described, for better of for worse, but I thank you a lot for the feedback. Good luck with the jam!