I don't think you have crossed any line. Is it an HDR shot, though, in the sense that you have blended different exposures? If so, why, particularly with a D800E which they tell me gives pretty good dynamic range anyway? If it is a blended HDR perhaps that explains a certain muddiness which is unavoidable whether or not you are using a tripod with multiple blended exposures of very high frequency detail like foliage or grass, because alignment can't be perfect. I say "perhaps" because I can't be confident of what I am seeing on a small screen - but it does look less than tack sharp, which isn't what I would expect with your camera.