Complex sentence: At first he is puzzled as to why Tony and Adriana would be driving together, then to save face in front of his crew knowingly tells a false story that Tony had a sick relative around the area the accident occurred.
Split into simpler sentences: At first he is puzzled as to why Tony and Adriana would be driving together. However, to save face in front of his crew, he makes up a story that Tony had a sick relative around the area the accident occurred.