I don't believe Kevin left DT because of MP, but from what I've read, there was a lot of tension between the two of them during the first OSI sessions, and I doubt it was a coincidence that Kevin became much more reluctant to talk about DT in interviews after that. That said, even now that MP is gone, I still find it unlikely that Kevin would suddenly want to perform with the band again, because to date he's only played one solo show and none with OSI, so live performances of any kind are clearly not high on his priority list.