A Warrensville Heights man shocked a courtroom full of spectators Tuesday when he sucker-punched his own defense attorney after a judge sentenced him to 45 years in prison. Cuyahoga County sheriff’s deputies took down David Chislton after the 42-year-old struck lawyer Aaron Brockler in the face with both of his handcuffed fists, the witnesses said. Chislton spurred an hours-long police standoff in 2017 when he pistol-whipped his girlfriend and set his apartment complex on fire. Russo sentenced Chislton sentenced on nearly two dozen charges, including multiple counts of aggravated arson and felonious assault, in 2017 incident.