It's a really interesting effect. It reminds me of those
hybrid images that were floating around recently; You know the ones - where it's a picture of Einstein and Marilyn Monroe at the same time depending if you squint or not.
It's fascinating how from far away (or in the thumbnails) something definitely looks blurry, but in the larger picture, everything looks fine. I'm not sure I understand the apodizing masks, but it seems to me that you have essentially got crystal clear high-frequency detail, but blurry low-frequency data.
Thanks for sharing! :-)