Complex sentence: However, Luthor refuses to relinquish the data, going so far as to erase it from the lab computers, Waller give them a copy, being disgusted with Luthor's plans.
Split into simpler sentences: However, Luthor refuses to relinquish the data, going so far as to erase it from the lab computers. Waller gives them a copy, being disgusted with Luthor's plans.