I've had this issue in the past with a spider I owned that suffered from the wobble as well.

I was able to solve the issue simple enough by purchasing a set of feeding tongs ($10) so that I was able to offer an appropriately sized prey item and actually position the mouse in an area where the spider ball was able to see it/strike more efficiently...without risking hurting itself by making contact with the tub/ornaments OR my hand.

The tongs provide you with the ability to offer the prey more conveniently without disturbing the critter or risking any unwanted contact.

Good luck to you either way!