I think that is the evidence - one of the reporters said GH had said something to that effect. While I agree GH should talk to JJB first before letting anyone else know, an announcement has to be made soon so everyone knows what's going on.
Someone mentioned JJB staying under a new coach. Unless the new guy has complete freedom with all these support staff I doubt we'd get the best available. A new coach wouldn't have a complete gang of assistants ready to come with them, but they need to be given absolute backing to build their support staff as they see fit.