Unfortunately, they are not long enough. Two might be able to be stretched to do this on the top of the sensor but not the bottom (3rd) wire. Sometimes I why Apple does this. It's designed for that if you break it, you have to replace the whole sensor with the wiring harness, not do a hack to fix it.
Edit: Looking at my 800K drive (again), if rewired as stated before like you said, the the floppy arm that goes into that sensor would be hitting the wire if you stretched to be soldered in place which would cause interference. Damn it. But great idea though.