I would expect it will be clear as to whether he was booted out or stepped down voluntarily soon.
They have plenty of morning worship recordings. They could easily upload one he has given within a short period of time if there was no wrongdoing.
I don't think they would want any negative gossip if it wasn't necessary.
This situation is going to put a lot of mistrust in the minds of some JWs. How do they know what to make of his past talks/morning worships/GB updates/GB monthly broadcasts now that he is no longer a GB?