There are venomous people on both the pro and anti Trump side. How many threats have been issued against anti Trump people? And did you read the linked article or just the headline and blurb supplied? Also I'm not sure I'd classify a call for ostracism as venomous.
And yes his ability to win the nomination is still in doubt. But either way if he is trying to win or lose, he is showing incompetency in doing so. And he doesn't have a wide choice of advisors to run a campaign? Please tell me you are joking. If he is trying to win, I'm not sure what to say. CO was pitiful in how his campaign performed. He seems to have no idea about how the delegate process works in multiple states, CO and LA just for starters. He doesn't seem to understand what a unbound delegate is. I could believe that he didn't really enter to win as his former staffer states, but to use the terminology from the article you linked, his cult will not be swayed in their belief no matter how hard he tries to lose.
Well, if nothing else he will have single-handedly given you Cruz instead of Jeb! or Robio. I hope you don't think Cruz could have gotten as far as he has without Trump. You're welcome