RSL appears to have a very different understanding to everyone else of what HDR is.http://www.paulgaffneyphotography.com/We-Make-the-Path-by-Walking
I find that first image interesting, now that I have looked at it far longer than I would had there not been this discussion about it, and find that after looking for more than a little while it changes ( not unlike those 3D scrambled images do) so that now I see (almost) a line down the middle, well just left of the middle, which makes it look like two images taken in very similar light stitched together, and that makes it interesting, to me.
I don't think that trompe-l'oeil was the photographer's intention or perhaps it might be, if only we were able to converse with him about this.
However if we read that last page of that series (Tip: you don't have to actually click on the little arrows, just on the image, and it will go to the next in sequence, it's a technique borrowed from computer games and quite common now on ordinary websites - an useful technique to know as many sites use this device :p ) Paul explains his thinking behind these images, or non-thinking, if he attained the state he aspired to.
He says he wants to 'communicate a sense of the subtle internal and psychological changes...." Note the word 'subtle'. So I would have thought that the use of HDR would be somewhat perverse and unlikely in the extreme.
His goals , it seems to me, are not dissimilar to those of a high proportion of 'contemplative' photographers, and whether he succeeds here or not will depend very much on the eye of the beholder.