New throttle cables?

On my recent trip to Baja I broke my throttle, so I have called George at Uptite to get his throttle tube. I pulled my old one off tonight, and found that the cables look like this:





Do I need to buy new cables? Where should I get them and how much will it cost?

Thanks,
Blake

P.S.
3 days after Baja and my bike already looks like this:

Are you getting just the tube or the whole housing? The way the cables look I'd think the housing was smashed.

Dave