Kevin, your ribs look delicious! The sun hits it just right in your photo.
Looking at the raw back ribs, I'd say that the membrane was partially removed on the right side end. Remember, there are two layers of membrane. In a human, it would be called the visceral pleura (the membrane touching the lungs) and the parietal pleura (the membrane holding the ribs together).
What you want to do is remove the top membrane (visceral pleura) from the bottom membrane (parietal pleura). You can do this with a butter knife, or as I was taught by the great Ric Gilbert, Ric's Righteous Ribs, using an oyster shucker. Of course, we have oyster shuckers in NorCal and I bet it is hard to find in the Midwest, but it is a perfect tool. A pointy butter knife is good too. I was taught to look for the area where the two membranes are separated by a column of fat. That column of fat runs along each side of the rib bone and can be seen in Kevin's photos. The hogs in the winter tend to have plenty of this fat layer. Yours is less pronounced and thus harder to pick apart.
If you are successful in removing the top membrane from the bottom membrane (with a paper towel), then your bones will remain together during the cook. IF you remove both membranes, the ribs will likely fall away from each other.
However, it should be noted the proper removal of the top visceral membrane will still increase the risk of blowout bones, as we have discussed in the past. With one membrane, it is less able to hold on to the bones, as opposed to two membranes. I can see that there is a good argument to just leave them, especially if you are cooking for home. But some will argue, they don't like the texture, thinking the membranes are like parchment. Some just score both membranes with a sharp knife and are totally happy with the end result. I don't think it should be a requirement to remove the membrane. I do think of it as just an aspect of ribs.