I still prefer 16-bit ProPhoto RGB as an editing space. ProPhoto RGB preserves all the colors captured in your raw file. Smaller color spaces can sometimes be subject to color banding with extensive editing. It is also better if you are ever to print to a wide gamut printer. Higher bit depth and larger color spaces can be made smaller at output, but once you make something smaller you can't regain the lost information. Of course, as long as you preserve the original RAW file you can still recover everything from that.
I downloaded your flikr image to troubleshoot. The image in flikr is in ProPhoto RGB. Apparently flikr is able to color manage the photo (looks good by the way). DA assumes that everything is in sRGB. The symptoms you observe are standard for viewing a ProPhoto RGB image in sRGB colorspace without conversion. You need to convert your photos to sRGB before uploading onto DA and everything will look like it does on flikr (except DA still has the Exorcist Green background (yuck).
Well, I notice if you hit download image on you deviation page, then the image with the colors I see in flickr came up. I think it has to do with the image being resize on DA. When you put it up on DA do you select original size or one of the other sizes. Maybe if you pick original size it will not change the color since it does not have to be resize.