The simple answer to the question of how to correct inaccurate is that the minutes of the last general meeting can’t be approved or otherwise until the next general meeting (executive committee meetings are a different forum with their own processes).
However, at that next AGM Fran and her husband should oppose the standard motion to approve the minutes of the previous meeting and offer a more accurate record of what was discussed and decided.
In fact they could send a letter to the new strata manager right now saying that they intend to do this and why. That letter will be on the record for anyone to see.
They could also present a motion that the minutes of the previous year’s AGM were also defamatory and inaccurate, detailing how as precisely and unemotionally as possible. That way, at least the most recent record is accurate (although you are drawing attention to the nasty stuff).
Regarding other posts about inaccurate minutes, LarryV’s idea of putting it on the agenda of the next AGM that the EC can’t distribute minutes until they have been approved is sound (but bear in mind you have only 14 days in which to do this).
Why not just put a montion to the next EC meeting censuring the strata manager for inaccurate minutes – with details of how they are inaccurate – plus anopther motion asking the EC to examine the terms of the strata manager’s contract with a view to finding a replacement. That should get their attention.