I don't understand any suggestions that Redcar could have avoided this or suggestions they've made a mistake by signing an injured rider.
Every year teams start with riders who didn't complete the previous season. What would the alternative be? Don't sign riders till they have proved their fully fit (which may not be till March)?
So we could potentially have a dozen riders with no teams because they weren't fit in December when teams were signed! Where will these replacements come from anyway, it's not like there's that many available riders without teams to replace Janowski, Klindt, Wright, Woffinden, Gilkes, Perry, Mulford & Jorgensen for example.
Redcar are unfortunate, but all they can do is go off the medical advice at the time, that TJ would be fit in March.