I don't get the impression that Bloom is a patient man so I don't think BG is too far off the mark, although I think we'd have to be struggling rather than not be in the playoffs before Slade would be replaced.
The Bloom/Knight decision hasn't just been made. Clearly both would have known about it for months. Therefore, when it came to renewing Russell's contract they would have known it was Bloom he was going to be working under, so if Bloom didn't want him he wouldn't be here now.