That's a temporary fix at best, and also put exsessive stress on the springs. That can lead to premature spring failure.
Just from what I'm reading, it sounds like somethign is possibly bent/damaged. Perhaps the spring bucket in the frame or the control arm. Could also be a weak spring in the rear.
There is also one other possibility, the problem could be on the right side. A damaged spring seat in the right control arm, not allowing the spring to sit properly, could be jacking the right side up, making it lean to the left.
