By Jasmine Allday EastEnders bosses had a string of clever tactics to keep Keanu Taylor’s shock exit a secret. Soap boss Chris Clenshaw previously explained how the team had several methods to keep people guessing right up until the last minute about what might happen on the BBC soap this Christmas. Chris recently revealed: “We’ve had several methods in place throughout the entire year to keep the storyline a secret and to ensure that the Christmas Day episode and the big reveal of who’s on the floor – plus who does it – remains under wraps until the 25th December. Sadly, I can’t reveal what t…