I think he had resigned himself to a guilty verdict in the double homicide and when he was acquitted the reality of just how incredibly stupid the Odin Lloyd murder was finally hit him like a ton of bricks and he couldn't bear it. Remember, the motive in the Odin Lloyd trial was that Hernandez was worried Lloyd might have been talking to people about the exact double homicide he was just found not guilty of. So he basically killed a guy, his future sister in-law's boyfriend no less, because he was worried about him possibly talking about other murders he ended up getting away with. He openly cried in court last week, something he did not really do in the first trial. I think he had already played the possible outcomes out in his head, and like I said earlier, was resigned to a guilty verdict. Had he been found guilty i think it would have in someway justified the Lloyd murder in his head or at least not changed his mental status quo. When he ended up being found not guilty it added so much more pain and self hatred to his decisions involving Lloyd that he simply could not deal with the stress anymore.