as an update to this, doesn't looks like anything mentioned about this in the s208 release notes either.
Ended up getting a tech out to swap out the problem PTAT box that had the tuner locked out. It was actually somehow creating problems with a second tuner on that box too. I'm just glad the tech was agreeable to the swap out. He spent a good half hour on the phone with someone in tech support at Dish, but finally realized that guy was just grasping at straws.
This should be resolved in S208. Please let us know if this continues to happen.