I have seen 1 normal wobble before. It wasn't a corkscrew but a good amount of head bobbing. I will be getting a spider soon enough. I love the way they and the morphs they produce look.

I think every spider wobbles. Until someone video tapes a spider for 20 years with out a wobble and I see it I say they all wobble. Spiders are probably the coolest base morph and without them we wouldn't have any of the Bee morphs.

I understand you being worried I really do. Look up the spider wobble on youtube and compare your snake to it. Keep in mind some of the videos are sad and some are just a slight head wobble