If Koal loses against Russeras and dbshck wins or draws, he can finish 15th and has to play a round against the 4th of Division 3 for the playoffs to avoid relegation.
I would have seen it exactly the same way, if I lose and my opponent wins one place behind me, I have to go into relegation, so I can be dropped from division 2 with a lot of bad luck.
Unless I've overlooked something (or we both have), relegation is possible and I hope I can still avoid it, but we all know it takes a bit of luck.