I believe you will need to bolt the K member back onto the body before the torsion bars will come out. Both ends are in a machined housing and need to move about 2" - 3" backwards to come out. The hex on each end of the bar is also a machined surface about 1 1/2" long. Picture a nut in a deep well socket, the bar is the nut, the socket on one end is the lower control arm pivot, and the other end socket is the trans crossmember. The nuts are one piece, the ends do not give or flex. I don't believe the bars will move through the machined housings with the weight of the K member hanging on them.

The other option is to unbolt the lower control arm pivot point on both control arms and pull the K member forward off the control arm pivot points, then you may be able to remove each lower control arm off the torsion bars individually. Once the control arms are removed from the bars, they will probably come out of the trans crossmember.

When you reassemble it, install everything except the torsion bar adjusting bolts, be sure the control arms are pointing down, then install the bars, then the adjusting bolts. If the control arm torsion bar sockets are not oriented correctly, the bars will bot have enough tension to support the car. Gene