People who disagree are not going to be convinced by corporate comms. It’s not going to happen. It’s a bigger distraction than what you’d otherwise get.
The idea is not to release "corporate comms", but in full transparency, honesty and with complete willingness to be proven wrong release all the data (email messages, meeting transcripts, web sources, documents, spreadsheets, simulations, etc.) the decision was based on and your thought process.