Are you saying you know that Barton left? The tweet clearly says that the new CPA is working with the auditor. I don't get how you know from this that they are the same people. If you were CPA and auditor at a company would you say Tenkay the CPA is working with Tenkay the auditor?
I think they are different people. The CPA left and has been replaced with a new CPA, who is now working with Barton the auditor.
You gotta admit that my explanation is less of a leap than yours...