Well I saw the youtube video and noticed some errors and oversites.
First Dr. Groves expertess seems to be with holographic analysis not necessarily photographic analysis. And that seems apparent when he talks about the pictures specificaly the boot hotspot and the "famous" Aldrin picture:
The company he works for does tire wear anaylisys using holographic interferometry
(
http://www.aip.org/tip/INPHFA/vol-3/iss-3/p37.pdf )
Basicaly they take a hologram of a tire. Use the tire. Then measure the wear by overlaping the hologram of the tire over the actual tire and measure the Moire or fringe patterns.
Not quite the same thing as analysing a photograph for light source and distance info.
The good doctor and the other interviewees did not seem to understand much about exposure rates either.
http://www.hq.nasa.gov/alsj/a11/AS11-40-5903HR.jpg
Anyhoo. As you can see in the "famous" photograph abouv you will notice that Aldrin is not standing too far from the lander. the lander uses a gold maylar as an insulator. If you look carfully at Aldrin's right arm and leg (his right arm and leg) you will notice a slight gold tinge. The "fill" light is coming from the light reflected from the gold maylar insulation of the lander's decent stage. You can also tell the direction form the shadows being cast from the wrinkles that the light direction is pretty diffused buit is basiclly coming from a low angle. I guess that is something the good doctor et. al. missed.
Also, I think the two foot height distance is probably a bit exagerated. If you notice Southwind7, Aldrin is in fact standing at the base of the depression close to lower end of the "lip". His right foot is right on the base and his left foot is slightly lifted on the lower end of the "lip".
Page 201 of this report (
http://history.nasa.gov/alsj/a11/A11_MissionReport.pdf ) shows that there were many creaters around the lander. Ranging from "very subdued" to "relatively sharp". The astronauts report some of the rims sloped at 15 degrees and ranged from 1 meter or less. Needless to say the ground was very uneven.
You can see on page 26 and 28 of this report (
http://history.nasa.gov/alsj/a11/as11psr.pdf ) the difference in height between the left and right landing pad of the lander. The height difference is quite a bit larger than .9 meters
Page 47 of the above mentioned report show the position and direction of the picture 5903 taken in relation to the LM. It also mentions the general angle (if I read the legend right) shows that the picture's centerline tilted more than 25 degrees below the horizon.
Here is also picture 5902 (
http://www.hq.nasa.gov/alsj/a11/AS11-40-5902HR.jpg ) which was taken just before 5903 and from slightly different position and angles. Notice how differently the image has been cropped.
page 47 of the science report shows the different positions Neil was when he took the pictures. Notice in 5902 how much higher the area in front of Neil is compared to 5903. Compare the shadows of Aldrin and the lander leg and the angle of the shadows in the footprints. Neil was standing on a mound and Aldrin was standing in a crater (you can also add in the difference in height between Neil and Aldrin. Neil is taller) . The height difference is even more exagereated because the astronauts tend to lean a little forward because of how the wieght of the backpack shifts the center of gravity on the astronauts. that why you see so much of the top surface of Aldrin's backpack.
Now lets look at picture 5866. The boot hot spot picture. The hot spot on the boot is lined up right center of the photograph which would mean the source of the hotspot would be coming more from directly behind the camera rather than to the right as was mentioned in the video. That would mean that a possible source of the light causing the hotspot could have been (and most likely is) the reflection of the Sun shining off of Neil's helmet visor.
In the video the video camera clearly shows Neil walking out of the shadow area into the sun light to take the picture (5899). That means the the sun would have been shining on Neil and the light from his suit and shiny visor would have been reflecting light towards Aldrin.
As for the all the light shining into the dark shadow of the lander. Notice the shadows being cast into the wrinkles of the space suit? notice how the top of Aldrin's lifted leg has a shadow on top? That means the light source was coming primarily from below. The light is also pretty diffused which means that it is light is being reflected from the surface of the moon on to Aldrin and the lander.
You can even see the sunlit surface reflected in the Acent stage windows.
Funny how a physicist and a researcher in photoanalysis missed what a computer maintenance intructor can see.