Any time you see that Ady has changed the composition of a shot, specifically flipping it, it's most likely because A) it was flipped before and restoring it won't hurt continuity; B) it was flipped before and he found a way to maintain continuity and restore the shot; or C) the continuity was wrong before and flipping the shot has fixed it.

Ady also takes much greater care with his flipped shots than any professional editor would - if there's anything that would give it away as a flipped shot, he usually fixes that, too.