A forum is what you make it, you cant expect to come to an interactive site and be entertained. It is as much your responsibility to be involved as it is others to involve you.
I am unsure why you felt that a minor altercation between a few members (me being one of them) upset the dynamics of the forum, reading some old posts and being members of loads of forums over the years, it is pretty normal for members to clash, e-fight or flame each other!
Some of the posts i have read on this site are 3-5 years old, and conflict still existed then so painting a picture of utopia is misleading. Its like when my aunt says there was no crime in the old days and then i read Oliver Twist!!!
From what i have read, i feel you dont feel apart of TIBB anymore, which is sad. But maybe you need to take ownership as a member and come up with solutions rather than solely point out the problem. When you just say what the problem is you get people on the defensive and that leads to no solution being found.
So why not start now and suggest things that will make you feel more included.....