Pride and sunk-cost fallacy.

He genuinely believed in what the company could do in expanding human evolution, which was doubled down by Alex's belief/willingness to push past ethical limitations. So when issues started to appear slowly, he hired specific individuals to try to put out the fires, even if it meant "dealing" with others. Then, inevitably, it all blew up. But he was already too far in and believed he could fix it. He just needed time, even though half the station was dead or dying. This carries over to his real life persona too. The world is ending and he's still doing extremely risky experiments, hoping that diving even further into what created the nightmare (the Typhon), he can find a solution. He can employ another force to facilitate what he needs. He just needs time and to find a way to control/convince more people, including the Typhon itself.

The problem is that he could be considered right in some situations, you could even argue that the ends justifies the means. But whether that's the case is up to the player. Either way though, he's a prideful bastard that will look at a station filled with corpses and say, "Just give me a bit of time, I can fix this. It'll all be worth it in the end."