Complex sentence: This was partly due to the prosecutor pulling a gun on Vance and firing a blank round; instinctively, Vance not only disarmed the prosecutor, but stopped the actual smoke from the gun, proving that he could have stopped his father without lethal force.
Split into simpler sentences: This was partly due to the prosecutor pulling a gun on Vance and firing a blank round. Instinctively, Vance not only disarms the prosecutor, but stops the actual smoke from the gun, proving that he could have stopped his father without lethal force.