Unfortunately this doesn't seem fixable within the year and a half. It's probably time for another mini re-build. Guys we should be trading:
Tuch because he is a year and a half from being a UFA and as much as he grew up loving the Sabres, I think he'll be looking to get out of this mess.
Greenway if he gets healthy before the deadline because he is a UFA after the season and will probably be looking to leave also.
Zucker because he is a UFA after the season.
One of Power or Byram because of redundancy on the blue line. I only trade Power if you are getting a youngish center back in return that has already established himself and is signed for at least 4-5 years after this one.
Any other pending UFA's, you trade and get the best you can.
Then in the off-season you end the Sabres recent tradition of giving free passes to the NHL for young recent draft picks. Sign and trade for vets to fill the lineup and make players earn their way to the NHL.
This team has the worst record in the NHL but they are not the worst team. If they can hit on their top 5 pick and make a couple savvy moves, they could stop the playoff drought after year 15.