So...why has he regressed? Why is his game downright awful right now? Seems like a coaching fail to me. Get someone new in there and start to rebuild his confidence.

Because you could say the same about regressions in everyone's game not named Mika. And frankly, Mika didn't play very well and has been the problem with our offense for part of the season as well, notwithstanding his world-beater performance against Gonzaga. At what point do our players and our team start improving as the season goes along?