He ended up staying in ICU for five days. They're still working on getting his lung function back to normal, but he's much better than he was even a few days ago. The plan is to move him to a rehab facility on Monday and let him get his strength back there. The biggest challenge will be making sure he's steady on his feet again.
He's not really happy with the no sugar/no fat diet they've been feeding him, but he also hasn't eaten the Tootsie Pop my sister left for him. Hopefully this will be enough to get him to drop some pounds...he could lose 75-100 and still not be skinny. If he can handle the treadmill, that's probably his best option for exercise.