I think basically what happened was that a group of fans got together and formed the Trust when it became clear that Lavaflow were a serious threat to the club. Mark played a huge part in getting it going (for which he deserves credit); he arranged the first meeting at the garden centre and really drove it forward in the early days. But then he went a bit bonkers and started antagonising Jon Sotnick to the point where the Trust was, to the average fan, somehow contriving to look like the bad guys. Sotnick went running to the papers and used Mark's actions to discredit the Trust - which everyone knew he would. Several people asked Mark to stop, and of course he didn't. Eventually, most of the original board fell out with him, quit and left him to it.
And then Rodwell pissed on his shoes.