Take someone else with you and also either taker copious notes or even place a recording device on the table. If they object tell them you want an independent, undisputed record of the proceedings. It's hard enough to get people to become School Governors, even without this kind of thing. I would bet that in the end, one unnamed person has taken offence at some innocuous comment, some people love to take offence. A colleague was setting up the lab for a Open Evening asked her student helpers Who's manning this bench tonight. A parent-governor publically told her she shouldn't use sexist language, that she ought to use gender neutral words. So she then asked them Who's personning this bench tonight, which didn't go down well at all.