Complex sentence: Embittered and distancing himself from his defeat, Brock no longer wants anything to do with the stone tape and willfully disregards Jill's mounting concerns that there is still more to learn about the room and that it is dangerous to stop their research.
Split into simpler sentences: Embittered and distancing himself from his defeat, Brock no longer wants anything to do with the stone tape. He willfully disregards Jill's mounting concerns that there is still more to learn about the room and that it is dangerous to stop their research.