I don't think it was totally on Prohm but these two for whatever reason, never seemed on the same page. LW wanted to be a PG, he wasn't, Prohm knew it but had promised him a shot to play PG during recruitment. I assume Prohm communicated that to him but I don't think LW ever accepted that. Which just seems odd because he wasn't even PG on his high school team. He just clung too tightly to the NBA assessments that had him as a PG. Prohm is open to plenty of criticism for his coaching but if he can't make a PG out of you, you aren't one.
LW played the perfect role his SO year, he's suited pretty well to be the gunner off the bench. I think back to NBA guys like Joe Dumars or Bobby Jackson, guys who weren't PG's but in the reserve role had enough combo guard skills to be the guy you ran the offense through. NBA was always a long shot for him but he was more likely to fill that role than PG, he was just too big a liability on defense. He just never totally bought in to that role. He's very skilled and as good an athlete as we've had in a long time, probably had as high as ceiling as anyone as well, he was an exciting player to watch (for better or worse) but he'll go down as a "what could have been".