shortspoon, I have measured ohms on the Crossfire wheel speed sensors and have gotten measurements which do not fall within a small enough range to make any sense to me in determining a good from bad sensor. However, if you disconnect the speed sensor near the wheel at the electrical connector you should get 10v ~ 12v going to the speed sensor with the ignition on. If that voltage is there then you probably have a bad sensor. A proper diagnostic tool would give you a better idea as to which exact speed sensor is bad.
As to disconnecting the entire stability and ABS system with you having a manual transmission you could remove the 50 amp fuse ( it is well marked) in the small black box just in front of the cars battery. I would certainly go for the wheel speed sensors first! If you do disconnect the 50 amp fuse be certain your brake lights still function. On a SRT 6 removing that fuse will cause the rear brake lights to stop working, but on your car I think you will be okay. Also for your info replacing the CAB is really easy. Even doing it for the first time it shouldn't take much over a hour and requires simple tools. Used CAB is available on ebay at a reasonable price.