No, when DeMarco decided to implement the NWS, he bypassed other options in the SPSA that would not have Nationalized the GSES.
Major Questions of Economic and Political Importance, like the future of the US Secondary Mortgage Markets belong exclusively with our elected representatives in the US Congress.
HERA delegated power to the FHFA to run the conservatorships in a way that could "benefit the FHFA or by extension the public it serves", it did not delegate the power to decide the future of the US Secondary Mortgage Markets in the US.