I agree its two bad seasons, not back-to-back though. That matters, as he has shown he can rebuild a team. I also don't agree that he's consistently underachieved every year. His problem this season has more to do with roster management than anything in my opinion. Part of it was Prohm and the coaches' fault, part of it was bad luck/the nature of the business. They had 3 key players leave early. Lard is on the coaches, as they knew the risks when they signed him. He was also talented enough to be worth the risk, but he left early and they are paying for it now. Wigginton is partly on them, as they knew he wanted to leave for the NBA the first chance he got. It's also partly bad luck because he clearly wasn't ready and should have come back for at least another year (I don't think he was ever going to have the size/skill set for the NBA). Horton-Tucker leaving after 1 year was a really bad break and I don't think Prohm can be blamed for that. No one saw that coming when they recruited him and it really through a wrench into this season's team. This team is really lacking a play-making guard to help Haliburton. Either Wigginton or Horton-Tucker would have helped tremendously, and both should probably still be on the roster.
West Virginia finished in 10th place last year. Should they have fired Bob Huggins? Oklahoma finished 9th two years in a row and 7th last year, should they have fired Lon Kruger?
Prohm might need to go, but I don't think right now, or after this season in the time.