This year, the fireworks started a week before Diwali. On Monday, October 24, the board of directors of Tata Sons, on the advice of the principal shareholders – the Tata Trusts – decided to “replace” the chairman of Tata Sons, Cyrus Mistry. The move was not only fairly abrupt, it hinted at all sorts of backroom manoeuvring. From the details that have come out so far, Mistry came to know of the impending move just before the board meeting when one of the directors told him to resign or else. At the board meeting itself, the agenda to remove Mistry was tabled under “any other business” so that the mandatory 15-day notice could be waived. And, according to a letter written by Mistry, he was not even given an opportunity…