Yep. You don't go this long like this without there being some type of issue between the players/coaches. Just not responding to him. As good as he is at maximizing talent, he just doesn't' seem to have the ability to manage an actual high level of talent. Get someone who can.
This is something to consider, unfortunately.
Stevens career and rep has been made coaching up slightly lesser talent. At Butler, he takes a mid-major to the title game two straight seasons. Last season with the injuries was almost a perfect scenario for him. Hayward goes down opening night and everyone figures the season is a wash. Irving goes out late in the season and we go into the playoffs undermanned, but hungry with improving young talent. Perfect setup for Stevens to work his magic.
This is the first year he has ever had dominating, superior talent to work with.
He looks as lost as the players at this point.