Hope you get it sorted out. In Peter Fletcher's defence, I know that his staff have to deal with some crap and they shouldn't have to suffer abuse but there have been too many times when there has been a presumption of guilt plus there was the appalling PR disaster at the end of last season with the lad who took the ball.
Anyone who went to the FSF "Watching Football Is Not A Crime" meeting earlier this year will know that the police feel that watching football IS a crime. Banning orders for associating with "known" hooligans (even if they haven't done anything for years) and the like make that abundantly clear. As an ex-copper, Fletcher seems to have the same mentality.
This should have been investigated properly and you should have been written to, explaining the circumstances and asking for your version of events. To eject someone on the basis of some very flimsy identification evidence without having made even the most basic enquiries is ludicrous.