Amid the chaos -- and while Stowe appeared to resist arrest -- a woman aboard the train, Sheniqua Joseph, 22, got involved, according to police and the video.
After four minutes of alleged badgering of the officers, cops tried to place Joseph under arrest, video shows, and eventually slammed her against a wall while she went ballistic.
Joseph is accused of throwing a haymaker at one of the cops and kicking him in the stomach, court records allege.
She was arraigned on charges of obstructing governmental administration, resisting arrest and disorderly conduct.