Ryan Thiessen has written an edifying little story with the title Mr. Grewal's Big Lie. Moral of the Story? Don't lie, because one lie leads to another. Disaster inevitably follows.
For adults, however, the story is not quite so tidy, because we don't know yet whether the adulteration of the documents really was Grewal's work. These tapes were in the hands of Harper's office for two weeks, and the Conservative correction seems to suggest the 'mistakes' were made while there.
Here is another theory. Some over-eager conservative staffer, seeing that the evidence against the Liberals was not quite as juicy as it could be, began to edit. Cut out meaningless interruptions in order that the narrative worked better; delete places where Grewal seemed a little too eager; insert a laugh to make people look worse; juxtapose comments that separately might be innocent but together look damning.
So the story may be more complex. About one person's lie entangling his friends. One way or the other, however, nemesis inevitably reaps her grim harvest.