My guess, and it is just a guess, is that there's some deep and fundamental position that the board members hold to, which Sam cannot describe well enough to pass the Ideological Turing Test[0], and this failure was perceived as being deliberately dishonest.
Happens a lot. I know some on the very extreme outskirts of the left wing who look at the "splitters!" scene in Life of Brian and see themselves; I've seen it in arguments over programming language features; there's plenty of religious disputes that look like this from the outside; most of the Brexit arguments painted everyone who didn't agree with the speaker as being part of Team Other and merely an attempt to undermine Team Us; and so on.
People can get very seriously angry about things that seem totally pointless from the outside.
[0] https://www.lesswrong.com/tag/ideological-turing-tests