The fact that you got a spider is 100% on you, when you buy an animal you do extensive research, would you just go and buy any dog without research and knowing if it is the right fit or if there are certain health concerns with a certain breed? The answer is no and the same applies to snakes.
Now luckily a spider is not has bad as you make it sound to be, matter of fact the issue if you can call it that has been greatly exageratedby a lot of people that don't have a clue and never owned one simply because they saw a video of one train wreck.
They are more inquisitive they feed amazingly and severe wobble are the exception. Usually it is mild and hardly noticeable and is more likely to be notice around feeding time due to the excitement.
The key is to limit stress which goes for any ball python and keep your tempertures no higher than 86/88, if you keep a spider at a higher temperture you will accentuate the wobble.