I have bred my Spinner (spider x pinstripe) and her spider gene snakelets turned out just fine, no discernible wobble at all. Not all spiders have a wobble, there is just potential for it, and there's no real way to breed out a wobble. There is nothing wrong with breeding the spider gene (how else would you get spinners, bees, etc?), you just don't want to breed spider x spider like was mentioned above. Anything het pied would be awesome to breed to, and you can get single gene females het for pied pretty inexpensively. Check morphmarket.com for some price points. You won't be able to breed hatchling snakes any time soon but you will eventually.

Here's a good link for genetic problems explained: http://www.owalreptiles.com/issues.php