This is an extreme case most Spiders are just fine often with issue that is barely noticeable, they are not the only ones that wobble but the only ones people target when it comes to breeding because most ignore the fact that severe wobbler are not that common.
OP I am not sure how you keep your temps but I would recommend to keep your hot side no higher than 86, things such as temps and stress can affect Spiders and they do best kept at lower temps.