Our TT made it to Alaska and back, what to do now?

If the delamination problem is not extensive and just cosmetic now that you have the source of the leak fixed, you can leave it alone. We had some bad delamination on our last motorhome but there wasn't any structural damage. We used some plastic nuts and bolts on one section near the wheel well where we could access the back of the panel to pull it back together but the rest we left it as it was. We drove it for 200,000 more miles, sold it and as far as I know it's still on the road.