torsion bar system, i need help

Well, I've never seen a broken torsion bar. But sure looks like you found one.
I'm thinking that there is a broken off piece sticking out the front in you second pic.
If this is the case, you may not need that tool.
(The tool is to avoid scratching the torsion bar long ways with vise grips. A bad thing that can that breakage you've experianced)
Take the ring out like he said and hit the piece, if it is there, to the rear.
The rear "hex" will move aft and out of it's socket.
Your second picture "hex" is where the front part of the bar goes into the "lca".
Note the approximate postion of those treads on the adjuster screw.
Lube it good and screw to "unwind" the new torsion bar you are going to put in there.
When you get the new torsion bar installed run the screw back to it approximate original position and check the car sitting on level ground.
This determines the ride height of your car and affects the alignment.
I"m hoping you can get the front end back to level between the two sides by moving that screw and shouldn't need an alignment.