I was wondering about this, makes sense. I imagine the wider wheels on the sport magnify this by reducing "squirm" and the posi helps make it want to "push" also.
In the technical stuff with the crawler we go from front only to 4wd all the time to avoid the push and squirm and keep your line, air shifted transfer case helps immensely
__________________
2009 silver sport, 6MT touring and nav, 8700 miles when I got it, "almost" a daily driver now... bone stock aside from tint and Gemini CBE, PC'd Rays black stardust and running 275/295 DWS rubber