Shot
The reason we can't see it is because it's not being made.
A good chunk of TG is filmed very close to the broadcast date (the studio stuff) and since JC has been suspended that has not been done. I suppose that they could have done it without him but they decided not to for whatever reasons. It's not a case of them having the episode in the can and just deciding not to show it - which would indeed be most churlish.
I hope they sort this out soon and either reinstate him or let him go so that he can go off somewhere else and start "son of Top gear".
OH