They're artillery not direct fire units. I think units doing the opposite of what you instruct them to does not add character rather it detracts from the game. I've no idea about how the game physics is coded but I would have thought there must be values for turning rates or deceleration that could be chosen for hover units which would make them less agile and more 'realistic'
What happened to pathfinding?
Here is ACU moving in circles: https://replay.faforever.com/22003007
I think it happens when you order it to attack a unit that is close but not in its radius of attack