He wouldn't start on this team if it weren't for injury. What's your point?
I'm the biggest defender of Morgan because people see him miss a "gimme" on offense and don't understand why Beilein has him out there. He's out there for his defense and particularly his ability to hedge and recover. That ability can stifle teams that run the pick and roll well. It's Morgan's strength and even when he's struggling on the boards or on the offensive end, that's what you can usually rely on him for.
However, not today which is totally out of character.