Gus denying the run in with Griffen earlier in the year had nothing to do with protecting Griffen or the club, it was about protecting himself. What GM attacks a coach in front of people because of a performance at a trial game? Probably led to the lack of respect the coach apparently had from the players! What GM refuses to speak to a coach for periods of 6 weeks at a time? Breakdown in that communication probably leads to a lack of respect to the coach from players and staff.
Gould was protecting himself by lying, not Griffen, not the club, he was undermining Griffen constantly and made it impossible for him to do his job.
And in doing so he threw the chairman - Dave O'Neill - under a bus. Gould reckons he was ready to help Griffin through the next two years until he discovered that talks between Cleary & Oneill were well advanced, advanced enough for Cleary to approach his board about his future.