Hijacking my own thread, but check out that tripod, or lack thereof. His head is over his right foot (as opposed to the middle, according to the tripod concept)! The camera angle can make things look worse, but...
So, assuming the camera angle doesn't lie -- a heroic assumption (see below) -- and assuming Tiger doesn't Sway, the Low Point of the Stroke (ideally, opposite the Left Shoulder) is going to occur a bit forward of the middle of his Stance (and not over his left foot as is the normal case). Does phimaynard have an Impact photo in this sequence? If so, could we also see the Ball Location?
At this point in the Stroke, El Tigre appears to be leaning backwards -- his right ear is outside his right foot -- in an attempt to hit 'up' through Impact. This could well be the case if his intention was to minimize the Compression Leakage of Backspin (and its quid pro quo...[b]control). On the other hand, at the same point in the Stroke, the back view photo (below) in phimaynard's original post shows the right ear to be just in front of his right knee and well inside the Stance.
BTW, another way to hit 'up' is to respect the geometry of the Stroke by locating the Head in the center of the Stance through Impact and the Ball forward of Low Point.
This could well be the case if his intention was to minimize the Compression Leakage of Backspin (and its quid pro quo...[b]control). On the other hand, at the same point in the Stroke, the back view photo (below) in phimaynard's original post shows the right ear to be just in front of his right knee and well inside the Stance. 
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