You guys are so helpful!

Firstly... hello!

The strange movements you are seeing are refered to as a the spider wobble. Every spider has this neurological disorder, some show it more than others. Typically the wobble becomes more prominent or noticeable when the snake is excited or stressed, IE: When being handles, transported, or fed.

It does not harm the snake at all, spiders live long and healthy lives even with the disorder. It is just something that most spider owners have to accept or not deal with the morph. Nothing is wrong with your boy, so don't worry. It is normal... for a spider.