Just googled Lois Anderson. No. The Orthodox Presbyterian Church (Bergdhal’s church) and the Presbyterian Church in America both split off from the PCUSA. OPC in the 30’s; PCA early 70’s, I think. However, the ideas of the Insider Movement are influencing both liberal and conservative missiologists. The OPC and PCA are trying to determine if this view is Biblical or not for their own missionaries.
Lois Anderson was PCUSA