"I could cut the ones I have but not sure if I can remove the wire from the center in order to cut the metal sheath around it and then reinstall the wire and cut it to the needed length. "

Yes:

- cut/clip the bent end of the wire off
- pull the wire out of the housing
- cut the housing to the desired length (I use a cut-off wheel)
- push wire all the way back into the housing
- cut off the wire with 3-5 extra inches of wire extending out of the housing