it's a fair question. the answer is confidence. if you can start and play well, gaining confidence in yourself, remember that you really are a good player, that when you shoot it's going in, that can potentially do wonders.
what we don't know is whether confidence is even the issue or part of it or if he'd even play well in the g league. what you don't want is him to go down to the g league and stink it up - if confidence is the problem, you could stick a fork in him at that point.
if confidence isn't an issue and it's just that he isn't ready or just playing bad/slumping to start the season, i'd probably rather have him getting significant minutes at the NBA level as well.