Disabling VSC/TRAC is as simple as getting under the dash, finding a wire, and bypassing it with a switch.
Here the how to:
AndyMod 2.0. ABS Remains Active. - YotaTech Forums
(Basically, just unplug the ECU port, find the wire in the V18-3 spot, cut it 1.5 inches from the ECU, get extra wire, put a rocker or toggle switch on the dash in one of the factory locations.)
I have done this and it works very well. You just need to restart the vehicle to turn the VSC/TRAC back on after disabling them.