I just took the passenger side spring/caliper/hub assy apart to correct the location of the top of the new Hotchkis spring, install a couple of new wheel studs and new brake pads. I don't see how the spring could have come out of the top pocket just because you replaced the sway bar - there is too much pressure on the spring and control arms and they have raised "hat" type affairs to locate the springs upper and on the lower control arm. Do you still have stock springs on your car?
BTW - according to the Pozzi site, if you have lowered the front end with new/different springs, then the end link bushings will have to be shorter as the bar end needs to be parallel to the ground.
If you still have stock springs, I don't think you will be able to get enough "squish" on the spring with a compressor to move/rotate it without taking the spindle loose and dropping the lower control arm.
You don't have a rust issue on the lower control arm spring pocket do you?
