Take a dremel and carefully cut the JB weld off and hopefully you can remove or adjust the projector without breaking the reflector.
That's the exact reason why I just use a little bit of quick steel or JB putty to hold it. Aim it, leave the car exactly in the same place until the putty dries so if you have to adjust them make you can do it before it completely dries. Then it should be on sturdy enough where you can remove the the headlights, the the reflector then use either more putty or JB weld to reinforce it even more. Should be a awesome even cutoff if you do it right.
