The Jeep Wrangler transfer case isn’t the easiest to get into Low range. You need to pull the lever from the all the way forward position to all the way rearward. The Rubicons have a lower geared transfer case than the standard wrangler. That thing had be spinning like crazy. The article said it was being flat towed behind a motorhome. I doubt you would notice the extra resistance of the Jeep being in gear. There’s no way that it both popped into gear and the transfer case shifted to low range accidentally. This is definitely an example of READ THE OWNER’S MANUAL!