Maybe it's true what Tarja said at the time of the firing, that they weren't really that good friends to begin with. I mean Tuomas and Emppu definitely were good friends, but it doesn't seem like they were friends with Tarja prior to asking her to sing on a demo. So when in walks Marcelo, the stuff that weren't working that well to begin with, became even worse, and it all got too hard to deal with. But of course I don't know what really went down. I guess that's why we're still speculating, 7 years after the fact.