What I see is that you had an individual mold with an intricate design on the bottom surface of the mold. What happens when pouring oil into a design like that, is that the oil pools in the low spots. I think that is probably what happened here.
I have never done what you did (the mica oil added to the mold prior to putting HP batter into the mold), so cannot share personal experience on what can happen. But speaking as someone who uses a 'realease agent' (lanolin or Vaseline or mineral oil depending on what was handy at the time), I can say that the amount matters on whether or not the surface retains any of the release agent (oil, etc.) When used as a release agent, I simply rub a minimal amount onto the inner surface and it is such a light coating, that normally it is not even noticeable on the surface of the soap.
Because HP is already saponified prior to pouring into the mold, the pooled oil (with or without mica) has only two options of how to behave: 'Sit there indefinitely to attract dust & with time start to oxidize & become sticky' or 'Be absorbed into the soap.' Like AliOop said, how much of it can actually be absorbed into the soap really depends on the amount of oil, but also it depends on if the HP soap you made was already sufficiently superfatted to make absorption of additional oil less likely.
Questions: How many bars did you make like this? Is there any residual color on the surface of the soap? I cannot see the sides, so cannot tell if the surface color is different from the rest of the soap. All I really see is a shiny mustard-colored surface. What happens if you wash your hands with a bar of this soap? Does the color come away as the surface oil is washed away? And if so, does the surface retain any of the oiliness or does it go away easily with one or two washings? (If you have several bars, I suggest you use one to test for what happens with the oily surface.)