Just a quick update. Blue is moving very slowly, holding his neck still, barely turning his head. Looks like the dogs went for his throat mostly. Going to the vet today for tranquilizers so I can take him in to be checked.
One good thing out of all of this is that the neighbor across the street has restrained his pit bull and is building a fence to keep him in. The neighbors next door seem to have gotten rid of most of the other dogs. Hopefully they took them to the pound. Since they have small children, I think possibly this incident might have prevented a worse tragedy in the future.