Complex sentence: Rex King rejected all claimants to the Guardianship after Shoghi Effendi including Remey, but rather claimed that he, Rex King, was a "regent" pending the emergence of the second Guardian who was in "occultation".
Split into simpler sentences: Rex King rejected all claimants to the Guardianship after Shoghi Effendi including Remey. He claimed that he, Rex King, was a "regent" pending the emergence of the second Guardian who was in "occultation".