I don't know the kid or the situation, just from watching games on TV it doesn't look like he is buying into much of anything based on his play and his body language.
They can't get Marley to buy in to play a 3/4 and you want them to ask him to be the backup 5 man? I'm sure he would love that idea and would really start to turn his play around.
If you listen to the entire postgame interview and hear the point that Coach Sather really is trying to hammer across you can fit the puzzle pieces in fairly easily what's probably going on with the Curtis Twins.