I still like Cheap6's idea of toying with the ABS... as he said you don't have to go diving into the wiring of it all, just touching the surface, powering the shut-off solenoids for the rear calipers... but, it's not for me. I'm going the line locker because it can be taken out again and put into another car. This is a definite selling point for me because I'm looking to change cars quite soon.
Vice grips are a no-no for me because with the car club we're hosting regular burnout days, one every couple of months. A few times clamping off the rear hoses and they'd be on their way out for sure.
Sam