He certainly gave the club to believe that he would sit down and discuss a new contract at the end of the season. Yet all the time he was negotiating with Spurs, unbeknown to Saints. So he was deliberately dishonest and duplicitous; which most people in the modern game are, so no biggie.
They're all twats for sure.
I suppose as a manger you can be very easily fired and not much loyalty is shown by clubs to managers so there is not much love lost between parties.

what % sure?