I have an extremely hard time believing Sheed is anywhere close to NBA basketball level conditioning right now.
That's why he's coming back during a season where everyone is out of shape.
I still think he'd have a hard time. Those guys had a lockout induced layoff of a few months. Sheed hasn't played an NBA game since June '10. That's a huge layoff plus he wasn't exactly in the best shape then and he's 37.
If he did anything constructive, I'd be shocked.