When I true up a wheel, if there is any play in hub bearings, I certainly notice it. The bike shop that I worked at many years ago would never have sold a bike to someone with that kind of play in the hub. I am a little surprised that a wheel with that much play in the hub left Rodriquez shop in the first place. Or was everything tight initially?
I am curious, was it a belt drive or chain drive? The reason that I ask is that a belt puts more tension on the hub than a chain. And it sounds like the failure occurred near where I would expect more stress on the hub to occur with a belt than with a chain.
You occasionally hear of a Rohloff with a serious problem soon after new, but you usually hear of skipping gears instead of total failure. Major bummer.
I only know one person that tours on a Rodriguez, she loves her dérailleur bike, is not a Rohloff.