If the sun is the only light source, then why are the shadows are different angles?

http://www.badastronomy.com/bad/tv/iangoddard/moon01.htm, http://www.lunaranomalies.com/fake-moon.htm

The shadows in the Apollo picture above certainly appear to be in different directions, but does this imply that there is more than one light source? If we observe the picture of trees in a park, we see that the shadows are all in the same direction, but the shadows in the park are also projected on a level surface. Observe the effect on shadows projected onto a surface that is not level below. The angle of the shadow of the rocks depends on the slope of the surface, as can be seen in both the picture of the model and the picture of lunar inclines. Thus, the shadows are not in different directions because there is more than one light source;they are in different directions due to the contours of the lunar surface.

Since there is no light diffusion in a vacuum, the side of the astronaut and Lander facing away from the sun should be as dark as their shadows, unless there is some other light source.

Ah, ha! So there is another light source in these images after all- the lunar surface. It is very reflective and creates backscatter which illuminates the astronauts' suits. Notice however that the light does not diffuse and the shadows in the pictures remain rather stark, as they should.