I think it largely depends on the individual and how you define 'bad.' I've heard of this trait referred to as "head spinning" and spiders who have the trait, which I reason is a large percentage for it to have its own term, are known as 'spinners.'
As it has been stated, some people think it is a genetic flaw, others find it endearing; so long as he is able to eat and do all of his other snaky things without it interfering with his ability to live and thrive, than you should not worry about it.
There are some rare cases in which the 'spinning' is so severe that the snake can not keep its balance nor can it feed itself. However, in the vast majority of cases 'spinning' is marked only by a slight and occasional wobble, spin, corkscrew, tilt, etc. of the head and nothing more.
Personally, I find it interesting from an analytical standpoint. As far as I know, only Spider morphs are known to possess this trait. Maybe one day we will know the exact reason.
If you go to the BP husbandry forum and search 'spinning' you will find many more threads about this topic.
I think your snake looks beautiful! I hope you both enjoy many years together.