I called the vet jut before 4 pm and talked to the doc. It took a while but the barium got past and then broke up the blockage and everything moved through. She had no idea if it was a "real" blockage but whatever it was it's gone, he's perky and seems happy and will be expelling some interesting colored poo for a couple of days. He's also on a boiled ground venison and white rice for a few days and then I can start adding his kibble back in. But NO goodies for a while. He isn't happy about that I am sure.
But at least I've got my boy back.