Mussini is used to winning. Doesn't like losing and he had a bad game. If he wasn't upset then I'd begin to question things.
He isn't strong he enough yet to handle the load of being primary ball handler for 35 min. He will be much better suited playing both on and off the ball. I would have loved to see him coming off screens, catch, and shoot but he couldn't being the distributor.
Saw some good things with him using the pick and roll. The bigs at times took some poor angles and were slow to set which totally cripples the ball handler resulting in some TO's and/or Mussini swatting away his defender. Pre-season and into early out of conference you work these things out.
As for Elijah he's a nice walk-on. Brings good energy and must be a good asset in practice. He isn't anything more.