Not a justification but it did seem like the cause could have been trauma related to losing his partner and child but he doesn’t supposedly have his memories so now we are just left with something else
No its not. Its just a random drunk. The imprint from the first run through is still present in Clough in this life. It's messing with his head and his control. Like a chemical imbalance in his brain.
He beats up homeless people when he's stressed? What the hell man