Wait a sec, Beardyman. Tiree never mentioned a "Z", hypothetical or otherwise. Some of the rest of us have, but Tiree has not. In fact, Tiree hasn't said much throughout this thread, except to reiterate that (s)he feels wronged by X because of X's "backstabbing action towards a friend of long standing".

We haven't heard anything at all from Tiree since the 12th of April, so we can only hope that (s)he is not still "stuck" in that cycle of blaming X for X's action, instead of thinking about what Tiree might have done to result in the action X took.