Complex sentence: Harvey resisted, but Scorpius was able to remove him nonetheless, or so he said: he in fact reprogrammed Harvey to go dormant, to make Crichton believe that he was gone.
Split into simpler sentences: Harvey resisted, but Scorpius was able to remove him nonetheless, or so he said. He in fact reprogrammed Harvey to go dormant and make Crichton believe that he was gone.