I'm not giving you the "AD wasn't close to being ready for the big stage". He got all the PT he could possibly get, doesn't that go against the "you perform, you play" mantra we've heard for 25+ years? And I think the "poison" you mention could have been mitigated.
When I was in college our dorm had a scrappy softball team that was the last team to make it into the playoffs. Once we got in we beat everyone, especially Shakespeare who had a powerhouse that year. That was the best, they were so pissed and such bad sports it was great. We even clobbered the team that won the 1st half league in an unofficial championship.
The next year we returned most of the team, but we had some new flashier players that pretty much insisted they get all the PT because they were “better” than the guys from the year before. The coach sided with the new guys. The guys that ended up sitting got resentful, “Why should I sit? We won the whole thing when I played last year.” Morale suffered, the team never came together and we lost more than we won. Didn’t make the playoffs.
I know that intramural is light-years from intercollegiate, but I think the team dynamic is the same. Kill AO all you want for being human, doesn’t mean JC did a good job handling the situation