I REALLY hope the back thing isn't something that's serious and / or lingers for a while. We really need Sully, and I want to see him continue to develop with increased minutes.
As for the Memphis thing, I imagine it came down to one team or the other insisting on a 1st round pick being included and it fell apart because of that. The fact that it got so close to getting done means they probably had basically agreed in principle to swap Mayo and Ray, but a somewhat minor detail like that derailed it.
If Danny killed it because he was unwilling to give up one of our two 1sts last summer, I'm glad. It wouldn't have been worth it.