I sheared the ABS wiring on my front passenger tire. The speed sensor itself is intact but the wire connector is sheared. I have been trying to research whether I need to replace the ABS wheel speed sensor (which is much more costly) or whether I need to purchase an ABS wheel speed sensor wire harness. I am unclear on what/where the harness is located. I included a photo of the wire that is sheared, however you the sheared part is just out of the photo.
I don't see your picture, but you could splice the wire. You don't have much to loose. It will either work or it won't. I have spliced one (not on my Prius) and it worked fine.