These photos were posted on the Thorn Rohloff Forum. They show how the external gear mechanism can be bent inwards and rub against the disc rotor. Since this is the same position the external gear mechanism would be in on a Big Dummy it's something to be aware of. Not a huge risk and not something I'd lose any sleep over, but at the same time you want to keep this in mind when riding/transporting/storing your Big Dummy if it has a Rohloff.
BTW - the hub still shifted okay like this and the external gear mechanism could likely be bent back somewhat until it could be replaced.