I suddenly pictured anti-drone-controller drones. Like missiles that guide themselves to radar installations, these would guide themselves to drone controllers. Big surprise for the guy holding the joystick.
I really think that electronic jamming is a better option...
Spent some time around the HARM missiles that were used on radar installations back in The Day and....well, even if the incoming missile/drone is only a couple pounds the guy holding the joystick wouldn't be the only thing in the area to be surprised.