Some tanks - seems the most popular ones - can pivot in place by using only rudder-pedal input. If you're at a complete stop and pivot with your rudder, you will creep forward. At least that's what I've been reading, since I don't GV much.
Good point, but I would have thought that my deadband settings on the rudder pedals would have eliminated unintended turn input, and thus would have eliminated any "move" type instructions to the game engine. Maybe I didn't have the pedals centered, given the stress of the moment. I will keep an eye on this.
MH