I would have guessed Scientology myself.
I don't think he will be taken out, but if he were, I'd think that whoever replaces him would actually pull out of Ukraine, blame the whole thing on Putin, and try to repair the damage to Russia this whole thing has caused. Maybe in the long term they could plan to re-invade, but in the now they could build themselves up as a peacemaker and a rebuilder.
I foresee a lot of desertions if that happens.