When I refer to remastering, I was referring to modifications to the content (in this case the FX) rather than clean up the prints.
Well, to be fair, remastering is supposed to be just cleaning up the prints, not modifications or additions to the original elements/contents.
While TOS-R does involve remastering, they did a lot more to this episodes.
"Canon is only important to certain people because they have to cling to their knowledge of the minutiae. Open your mind! Be a Star Trek fan and open your mind and say, 'Where does Star Trek want to take me now'." - Leonard Nimoy