I'd be more worried by the kink near the cloaca than the one in the neck with a forever pet.

The neurological problem is a given with the spider gene but if the animal can eat and thrive despite the kinks then I would be loathe to cull.

But it all comes down to what you can tell once you view the animal. It may be the best option but only you will be able to compare what you can offer compared to what the animal actually needs.