When science is done wrong, it's called pseudoscience. It's pseudoscience because it's theoretically or empirically unfounded and making scientific claims that don't sit within the body of knowledge that is collectively referred to as scientific knowledge. Now it's often said that like bad science, there is bad religion. That is religion done right is a good thing while religion gone wrong is the problem. That sounds reasonable, except by what standard does religion become a pseudoreligion? With science, there's the strength of the claim proportional to the evidence and the commitment to methodology. I really don't see a parallel when it comes to religion going wrong.
The only way it makes sense to me is that religion gone wrong is akin to describing the atomic bomb as science gone wrong. The science is just fine, it's just the negative consequences that came from its use.