Did you ever find a solution for this? I have 04 coupe 6mt and same problem. It's getting more sensitive with the traction mostly on the on ramps and off ramps of highways. Accelerate or decelerate gives same problem. I thought it was due to bald rear tires. They wore out to the thread on me when that problem started for me. Old rear tires were 245/40/r18 but when I bought brand new tires to the original size (what's written on the door jam of the car; 245/45/ZR18) the problem was still there. It doesn't engage my rear brakes when it thinks its slipping. Lately I only notice the front tires. Their tread is still drivable but getting there. I tried wiping away dirt from the sensors on the front wheels that pick up the slip detection but that didn't seem to help. I really hope I can fix this because I got new brakes up already.

I haven't tried alignment yet, did it work for you?