That definitely sounds like a wobble to me... I've never (yet) seen Vinnie "corkscrew" but his wobble is obvious, so they can have one without the other. And it is usually just the head, although occasionally I will see his upper body shake too.
Vinnie is also rather clumsy, and a bit weaker than my other hatchlings (about the same age/size). So maybe there's a connection between that & the wobble?However he isn't the most graceful snake yet. A little clumsy still....seems like maybe he just isnt as strong as my other yet. But we are chalking that up to his age.He seems like a happy little guy regardless, and has an awesome feeding response... hoping that means there's nothing to worry about!