I got this from Rachelle B: 

"As of Friday, Alex said that Rob would be getting released shortly, so I assume by now he is out of the hospital.
Alex also told me that one of the 4 broken ribs that Nick had punctured one of his lungs, but I dont think it was too bad. They were thinking that it would heal itself, but also were gonna have to wait and see. I forget when or if Alex said he was going to get released."