Complex sentence: They find him and he is unhurt, until Jacob realizes he IS unhurt at which time he flattens Michael twice--once for scaring him out of 10 years of his life and twice for risking the grandson's life.
Split into simpler sentences: They find him and he is unhurt, until Jacob realizes he IS unhurt at which time he flattens Michael twice. Once for scaring him out of 10 years of his life and twice for risking the grandson's life.