I understand exactly how you feel.
Only another MDS Coordinator really understands the constant demands...yes, most think it's a fluff job....have heard that one too...there are two of us in the MDS Dept and when I hear the comment, "There's two of them up there" I know they're clueless.
I was in the same boat, but for me, going back to the floor was not an option; that's when I knew it was time to start looking for another MDS Position.
You have to keep in mind that some Companies are better than others to work for.
My goal eventually, is to be a Traveling/Interim MDS Coordinator.
I wish you luck & always know that you can go back to MDS if you so choose.