ill be dead honest...I cant even remember 100%
the first one, is actually modified from the second one,
but what I do remember....is that I started off by using splashes ( I dont remember the settings)
then I applied the splinter blur, and set the mode to darken, I know I used a slight polar inversion to get the pinch/circle effect in the middle, but I also duplicated a lot of layers....and then changed the layer properties to darken or lighten them...i wish I could remember all the steps >.< id love to finally post a tutorial...