When I use the tongs for lifting, I make sure to grab onto the round or log ABOVE center. (not like the image above with the tong hooks UNDER the log.)
By lifting from above center, the work will not try to roll out on it's own.
Same with dragging when it must be done. I try to figure how the log will ride, and then set the tong spikes "above center".
Turning corners can upset the tongs when the log changes orientation however.