Complex sentence: At the castle, Guy of Gisborne and Marian talk briefly of their unsuccesful wedding, with Gisbourne reminding her she can't embarass a man of his power at the altar without consequences.
Split into simpler sentences: At the castle, Guy of Gisborne and Marian talk breifly of their unsuccesful wedding. Gisbourne tells her she can't embarass a man at the altar, especially not one of his power, without consequences.