NEW PST pivot shaft bolt sheared off. Can't get LCA out.

hula
You couldn't have gotten that PST pivot shaft into the crossmember in the first place without backing out the torsion bar, and the lower control arm.
It would seem to me you would know those parts have to be backed out, to get out the shaft, ether still attached to the LCA, or on it's own.
I'm having a hard time here, trying to figure out your removal technique, in the first place.
You can get everything out by getting a big pry bar, between the crossmember, and LCA, and prying rearward, as another have already replied to you.
Well anyway, wish you luck, with your repair.