If you are referring to the Equalizer Brand WD hitch then the answer is it depends. I've had one for year and when I back up with a shallow turn into my spot, I leave it connected. If I really need to crank it tight into a spot, I disconnect the bars. You will bend the little silver "L" brackets if you turn it too tight in reverse. I have extra silver L's just in case.
2005 Ford Excursion Diesel 4X4 with Roadmaster Active Suspension, F350 1 3/16" rear sway bar, Bilstein shocks & steering damper.
2012 Sprinter 311BHS