I am in agreement with the above replies. A lot of owners assume the Chair carries a lot more power than they do. Many Chair’s exploit this.
In this case the issue of replacement should go to the owners and they vote on it.
Put the issue up for vote at the next AGM. As far as I know as long as it is properly put and approved (seconded etc) the secretary has to list in the agenda and it should be voted on. To this end the more support you have from fellow owners who agree with you the better your chances. This support needs to be gauged and engaged before any submission or meeting.
I am not sure that the Chair or the secretary can take it on their own authority to not list the issue for vote. Although I am sure many do.