I know fans forums are an unreliable judge of opinion and not representative of the fanbase, but let's assume that the fans in general are as unhappy with the board's performance as you suggest. How long has this situation been going on? 5 years? Longer? And in this time, have any realistic alternatives emerged? As pointed out above, if there were groups of fans being rebuffed by Cowan and Co, why would they then keep quiet about this? I think it's time to accept that there are no alternative owners/boards out there, and we have to make the best of what we have. That may mean trying some BoD memebers in different positions, and I know you could say this is merely shuffling deckchairs on the Titanic, but I don't see what choice we have.
I'm not applying this to you, but it seems to me that there are fans out there who actually enjoy bashing the board and take great pleasure in discovering potential, and indeed actual, screw-ups. This isn't healthy for anyone, we have enough problems as it is.