Not sure if its broken or has been changed but barrel rolling since the last patch has been screwed up. Holding the spin keys on a ship will rotate and then spaz out and start aiming your ship in different directions from what you originally began the roll in. This seems to be caused by where the mouse is located, however I've noticed that doing the roll will also move your mouse if flying straight anyway. If this was a change then I recommend the roll needs to be changed back to remain on the ships axis regardless of where the mouse cursor is placed. If its a bug then it could do with being fixed as it makes dogfighting smaller ships a lot harder.