Complex sentence: Bull returned to his Highwater range, and managed to get HARP's assets transferred to a new company by invoking a clause in the original contract with McGill that required them to return the range to its original natural condition.
Split into simpler sentences: Bull returned to his Highwater range, and transferred HARP's assets to a new company. He invoked a clause in the original contract with McGill that required them to return the range to its original natural condition.