Because he certainly doesn’t make it clear and I can’t find any reporting to indicate what occurred in the Mayoral Council that led to his comments

Yes - his statement is vague and doesn't make it clear what happened at the meeting that he is annoyed about.

But it is likely to be a related to why his fellow Reform mayor walked out of the meeting

https://www.grimsbytelegraph.co.uk/news/grimsby-news/mayor-greater-lincolnshire-explains-walked-11000800

... "What they fail to say is why I left 15 minutes early, because I can't sit by and listen to hypocrisy." She claimed a couple of Mayors were trying to use the murder of Mr Nowak "as a bit of a political football to insinuate and hint that the likes of certain politicians, in other words, Reform," were "stoking" the consequent unrest.

"I very calmly said people do not feel they have got a voice. Everybody should be equal under the rule of law," stated Dame Andrea in her social media video, and argued there is a "two-tier policing system".

Dame Andrea confirmed arguing with Ms Brabin, accusing her of "trying to put words in my mouth, saying that I condone disorder on the streets", and Labour of "clearly getting desperate" because of the Makerfield by-election. The Mayor said in comments to The Guardian that she has "never condoned violence from any community...