I think one thing in the messages kinda explains why shit went down the way it did, to me at least. That whoever it was said Alexi suddenly changed his mind about breaking up.
I mean the statement like "we just couldnt come to an agreement about stuff" and Alexi being all like "well obviously I'm going to continue" and the guys taking the name from him.
Maybe the thing they "couldn't agree about" was: Is COB the same band, does it matter who plays even if the songwriter doesn't change? With the guys having always said stuff like "it's gotta be exactly these guys". But from a songwriters point of view it's understandable to think you can continue with whoever, but from the whole "hate crew" perspective it's different.
I think that's the only thing that has anything important to do with the band breaking up.
Well also I think (don't mean to drag Alexi I genuinely think he is a good person) that with Alexi constantly having some sort of issues (really I mean has there been a period of more than two years without him getting hurt? and everything isn't said publicly. ) it can also be somewhat of an issue to band chemistry to always have something to worry about, but I don't think it really is the main reason for any drama.
Sorry this was kind of a ramble I haven't slept lol