Why don't the trust have a heavily moderated thread on OWTB as a start to improving communication? (I mean heavily moderated in terms of removing debates/arguing/personal stuff etc). Lots of forums have threads with particular rules, I don't see why this couldnt work here.
People can simply post questions/queries/worries/suggestions and someone from the trust could answer these in time. Any other posts could be removed. I know for a fact that the Brighton version of OWTB used to do this with the actual club, with the club posting anonymously. I guess people from within the club would answer stuff in their remit. If questions cannot be answered these could also be addressed in this thread with a simple, thanks but I am afraid we dont have that information, or cannot answer that etc.
It would be a start at least, and would help to organise a two way dialogue between the fans and the trust etc.
I also see the trust is looking to revamp the website. Why don't you move to Wordpress, a new good looking site could be up within minutes with a decent free template and it is built around a blogging platform, so why not have a regular trust blog? It doesnt have to be all secretive confidential goings on, you could have a whole host of people writing on there about all things Oldham Athletic, generating interest in the trust. I bet you could recruit a lot of content writers through this site.
I really think with the right attitude the trust could position itself as another online focal point for OAFC. If you have a busy website, you will have a lot more interest in the trust.