Yes, note the comments of one attendee:
During the shooting trials at Armscor's Alkantpan shooting range, “I personally saw a gun go out of control several times,” Young says. “They made a temporary rig consisting of two steel poles on each side of the weapon, with a rope in between to keep the weapon from swinging. The weapon eventually knocked the pol[e]s down.”Yep, controlling a robot cannon with poles and rope. No stopping the test, no turning off the robot, or..say fixing it! Nope, just tie it up and keep going!
Well, at least it wasn't the US government.