Some things we can forgive, other things we can forget. What he did to Tyler and everyone else: we can't do either...
While I think Monty might have been better if he escaped his abusive home life and no longer had to keep his homosexuality under wraps. The season still writes his way of coping as unsympathetic, by hurting others...
Winston was right, he was a human like any of us. But what he did was so bad we just can't look past it...