Not that it could ever be 100% proven one way or another, but from what I've seen in ball pythons, you want to be looking at the 2 animals breeding, I wouldn't see grandparents playing that much of a role. Like GTPs you want to look back a few generations to see the potential. Ball pythons I don't think it matters as much.

as for your last picture, my carpet python tired the same thing, but shes about 3 times bigger than the tube and got stuck lol