QA-OBS-9: A player taking relief from obstacles or from a Casual Area can move back along the line of play to the first available lie. What is the “greater relief” that the Director can announce?

Greater relief could be a drop zone, a re-throw, or the ability to move the lie. Relief (moving the lie without penalty) is granted for situations that are out of the ordinary, so the Director has a lot of leeway to deal with exceptional situations.