I think half the people meeting with him giving him a "no-hire" should have been a big flag. One of the takeaways should be that if half you team doesn't want

I think half the people meeting with him giving him a "no-hire" should have been a big flag. One of the takeaways should be that if half you team doesn't want to hire someone, you should have the guts to tell the person they didn't get the job. I've seen many programmer interview processes where only half the interviewers want to hire, but everyone found the person "likable", so there was trouble getting to the necessary "no-hire". I'm not sure of this case's specifics are like that, but one of the first things I learned to do in interviewing is how to say "no-hire" to cool, interesting, nice, marginally-competent people.