Yes, it is. If you unlock the brakes by getting a very slight forward movement and then hold the triggers down you will start rolling backwards. On some lighter aircraft with lots of ammo, N1K2-J's for example, you can get moving backwards fairly fast.
So *that's* how you back up after landing on a carrier deck, so you can reload?
Folks, play nice.
HTC changed them to fire at the same time so the kick will be even on both wings and not swing you around.