You cannot eliminate the problem unless you ban the sect. The state of Texas in this instance has gone well beyond the just pursuit of criminals and the protection of victims by compelling the evacuation of the FLDS compound.
WRONG. You eliminate the problem by ceasing the illegal behavior. Prosecution for statutory rape, bigamy, kidnapping, et al puts the current leadership behind bars and dissuades others from taking their place. You can still worship FLDS you just cant break the law.