Of course it's cause for concern, it's just that isn't real room for deformities other then neurological ones in an animal who has no limbs and can only breathe, eat, and poop. Also considering a snakes brain is simple as far as brains go (it only wants to breathe, eat, poop, and have sex) that there isn't much to go wrong; doesn't mean that something can't go wrong though.

I'm incredibly curious as to what the spider gene will look like after 4-5 pairings with each offspring mated off to another normal that is not related to each other in any way; not another morph (especially another recessive morph) just to make sure with a greater certainty that something like a spiders infamous neurological disorders can't be breed out.

Of course, scientifically, it'd technically take a whole lot of time and pairings to do so, but eh.