you are making too big a deal of it Tommy. It will drive just the same. When you were getting both to spin while staging, you had posi trac for a few seconds...it is no different. It's just there all the time now. These are open diff cars. the traction control takes care of the wheel that is is spinning by .either shifting power to the other wheel, or braking the spinning wheel... In the olden days, which I am part of, you could ride the emergency brake to make an open diff spin both wheels, although in reality, the power wasn't equal..
Anyway, when both hook up, it will walk to one side or the other because both are losing traction...you just steer her straight with a little correction...
Happy burn outs.....