The plant is alive, that much I can see with the growing tip. I would just put it in similar mix you did before, and put in part shade.
One thing with this succulent, it is obviously undergoing some stress, so you have to give it time again to adjust and acclimate. Since there are no leaves left, it will try to grow new ones. The plant will concentrate in growing new roots then the leaves.
At this point, I will not trim that plant, it has been to a lot of stress already, besides the branches looks okay. Just plant it back in a new mix. There are existing roots, so it should grow new ones slowly. I only use rooting hormones when there is no root visible. But this one has some roots already. Crassulas grow such a small and very shallow root ball, so plant in a small container for now in a new mix, water lightly and leave it alone in a part shade area.
