First organise as many owners as you can to support your plan – especially those who would serve on the committee if the nasty person wasn’t there.
Then you vote at the AGM to reduce the size of the committee to the same number as that group. This is a mandatory vote that should be taken at the start of the committee election.
Then you present your “ticket” which excludes the disruptive member and ask for people to vote you in as a group because there are things that need to be done and the committee hasn’t been functioning properly.
Also, scrutinise the nominations – for instance, if the disruptive owner is actually a co-owner, he can’t self-nominate, and he can’t self-nominate if he’s behind in his levies.
If anyone objects to your “ticket” strategy, tell them it’s all or nothing. No one is prepared to stand if the previous pattern of disruption and abuse continues.
You can do all this in the virtual meeting without naming names. And familiarise yourself with Schedule 1, and Section 31 and Section 32 of the Strata Act. In fact, print them out so you can quote chapter and verse on the correct procedures which you should insist must be followed.
This is your best chance to fix this problem. Talk to other owners, be prepared and get tough if you need to. Hurt feelings and bruised egos can be dealt with later.