I have met and interacted with Gavin Andresen and he seems to me to be a decent and intelligent person. Even decent and intelligent people can be fooled, so I feel that any animosity towards him is undeserved. Note also that he his not the only person that was fooled by CSW.

My belief is that Gavin probably felt that his certification was not really important because CSW stated that he was going to show the proof to the public. Then, when CSW's public proof turned out to be bogus, Gavin's certification became his downfall.