You're absolutely correct. Courts in the US will not touch doctrine.
However, it has already been brought out that the blood issue may involve liability for misrepresentation. This was discussed at length by Bethel higher-ups some time ago. Also, the Unthank episode proved that the Society is deficient on obeying child protection laws,at least within other legal systems.
There are many other possibilities here........
I have posted material here from an organization that is in the very forefront of fighting for church freedom in the US - who know what they're talking about. Their material shows how backward the WTS is, legally.
metatron