http://postimg.org/image/4tfj68lo5/
I'm spawning "blue" blue is spawning a weapon, and weapon is creating joint to blue.
When blue is ''falling'' i spawn a falling object to attach to so blue cannot get back in when out in falling area. ( this is a top down game, not using platform behavior)
"Weapon" then stops following blues movement, ie the joint is broken.
Blue is spawning both objects on different image points.