Rear spring bar and front control arm madness

That rear connection seems a little desperate. I can't figure the hacked upper, either. Lengthening it would only cause positive camber, which you don't want. Maybe it was cut at an angle to create positive caster, which can be hard to get beyond 2 or 3 degrees. There is a trick to drop the car by cutting and splicing the lower arm, but the upper wouldn't do it.