According to Grok, "The rule focuses on the ball's contact point with the ground or an object. For example, if a ball lands such that part of it is touching the foul line, it is fair, even if most of the ball is outside the line."
So the plane of the foul line like in soccer and football has nothing to do with it. It is the "touch point" of the ball. From what I see there is dirt between the line and where the ball is physically touching the ground. So, FOUL BALL!
Honestly 10 Years Gone doesn't really stand out for me. It's quintessential Zeppelin with shades of Kashmir and When the Leve Breaks. Love the dynamic shift back and forth from small to big. Great Zeppelin chords. But for me because it fits so well within the catalog, it does not really stand out if that makes sense.