"Scrubbing" is very common come the colder months. It's just the tyre skipping on full lock, the sidewalls aren't flexible enough to accommodate the tighter steering angle and the tyre deforms and looses contact with the road, then snaps back.
It's far more associated with extreme low profile, say, 40, 30 etc.. summer tyres. What tyres do you have? I had it on my RC, first time it happened I thought I'd driven over a brick!
Have a read of this previous thread on the subject