100%. While I do not condone his actions, publicly we do not know anything about his private life and the dynamics. Until there's a statement from his family, for all we know they may have been separated.
It's clearly the CN link and/or the cosying up with a customer that is the problem; the board would not care about his private life (and neither should the public, tbh).
And the open letter sounds more like it was written the way the public would expect a CEO to write.
Then obviously his letter could've said as much. It didn't, ergo an interpretation of available evidence clearly indicates you are wrong.