The council could fold tonight if councillors fail to agree a budget.
That is looking increasingly likely.
However the meeting never even got to discuss the budget before it ended in uproar.
Cllr Brogan had claimed that one of his party colleagues Cllr David Alcorn had received a threatening email at 4.46am from Cllr McBrearty.
Cllr McBrearty then called through Mayor Ian McGarvey for Cllr Brogan to “withdraw these slanderous comments.”
The independent councillor also asked for the email to be read into the record to “prove” it was not a threatening email.
Mayor McGarvey agreed; then withdrew permission on legal advice from Director of Service Liam Ward.
Mayor McGarvey was forced to adjourn the meeting amid uproar.
But Cllr McBrearty read out his email to Cllr Alcorn anyway as Fine Gael, Labour and independents listened.