This forward twitch is done when Burton has a strong sleeve and lapel grip and his opponent is in a defensive posture. To break their posture he twitches forward.
Burton likes to get a reaction from his opponent by using a fast piece of footwork. This gives him the opening to throw.
One of Burton’s most effective ways to get a reaction from an opponent is to bounce his weight up and down when gripped up.
When fighting against a left handed opponent, Burton – a right hander, has a good twitch to get their left leg back, so that he can throw with his Uchi mata.