Ok, maybe I did something wrong. Correction, I *probably* did something wrong. Anyway, a very long time ago I needed to change the lower ball joints on my old 74 spider. To do this, I got the car in the air on jackstands, removed the tire, then supported the place just "inside" (toward the inner fender) of the point where the ball joint bolts to the A arm with a bottle jack. I undid the shock, then the bolts which held the ball joint to the A arm. I then very gradually let the bottle jack down. Eventually the spring just fell out. I reversed the procedure to bolt it all back up.
Now, keep in mind this is a 15 year-old memory, when I was young, dumb and desperate, on a car that was as much rust as it was steel. In other words, ONE SHOULD PROBABLY NOT TRY THIS AT HOME.
But it was, as I recall, how *I* got front springs out.