If we are guessing potential rifts ( no implication that this has anything to do with the sacking ) I'd say a good candidate could be found in November 2011.
Nothing. The point is be very precise in your wording of the truth, and not to imply anything further, even by accident. Hence, choose your words carefully.
You'd be wise to choose your exact words very carefully even with the truth.
And make sure there is no other legal reason not to say the truth. eg you cannot name people given anonymity by a court etc.