With my husband's help making these directional arrows I can illustrate some of the possible readings. You can see a little more clearly how the spear would have to bend and how the two blue planes formed by the diagonal structure can be read in different directions. If we look at rotation point B as closer to us than rotation point A, the dragon is pushed forward in space and more space opens between the horse and the dragon (plane A>B>D>C it helps if you cover up the arrow at C).
If we see instead A as closer than B, then St. George is pulled forward into space creating more space between him and his horse (plane A>C>D>B cover up the arrow at D). The painting is way more complicated but I find it good to think about an idea pulled out of the whole. It's confusing enough! The last one is a drawing with a few more added planes. (-> #8)
