Re: "there are still plenty of supplies on the space station"
There's loads of cargo providers. SpaceX and Cygnus under NASA's COTS program - SpaceX and Boeing are about to test their vehicles for astronauts (under a different COTS program). The ESA and Japan both have unmanned cargo vehicles. And the Russians have Progress, which I think shares lots of parts with Soyuz but doesn't carry cosmonauts (only the dinner) and is also unmanned.