OG substitution was caused by Taiga's illness, the rest is all speculation
Norwegian player Tommy 'Taiga' Lee clarified the situation in his discord regarding his absence from the OG lineup in the last games of the DPC season:
"I know there are random speculations to why I’m not playing, just know that I have been given a proper break to recover from stress and my health. I have been ill more often than normal this year, gone to the doctor more often, and I didn’t feel the motivation to do anything. The last thing I need now is drama and non sense rumors to why my break is this long. Thanks for respecting my privacy"
OG has played the games of the current DPC season with substitutes, with Yuri 'merlin' Belkin assisting the team in the first game against Quest Esports and Adam 'Aramis' Moroz in the next two. The team is 1-2 in the series.