Although I wasn't the one who signed off, having seen it in person I would say it fell under could be flown with only minor repairs category and I would have signed too. The damage at the ends of the tubes is just wear and tear aesthetic stuff and not an issue at all as far as certification. The "buckle" which really looks worse in the above pic than it was in person is probably because of the automotive paint and just how good it looked to start with. If he hadn't filled the spirals so nicely and used such good paint it would have looked far less dramatic. My experience has been that automotive paint shows fracture type damage easier than normal paint, I know this is counter to the normal thinking, but that's what I have observed. Even if he would have needed to repair to fly (and again seeing it in person I'm not sure he would have had to) it was a scrape some paint, soak with CA, let dry 10 min away from flight worthiness on another H195. If he had to have proven it could be flown again in short order he definitely could have done it.
Related to fixing: Like I said CA would be fine, but if you really want the super tough fix. You can smear some epoxy down there and slide a coupler into that area to make it extra tough. That is of course if you can get a coupler in easily, I didn't look to see how you attached your buttons. Even if you used a permanent insert for the button you can;t get past, you could split the coupler, curl it up some to get it past the obstruction, then expand it to its full size and push into place.
Note: stuff like this is why I am afraid of that ground, and use over sized chutes. At least you can see where my advise to trade a long walk for repair work comes from. I love building rockets, I love flying rockets, but I HATE repairing rockets.