yes, quite right - but imho the reason for calling the meeting...

yes, quite right - but imho the reason for calling the meeting was to get rid of those particular directors. So they wanted to get rid of 3 of the 4 directors on the board - and replace them with 2 directors of their own choosing.
YOW must have 3 directors minimum to comply with Corps Act. Ergo they proposed 2 new ones to meet required level of total of 3 needed.
IF that was the reason for calling the spill, then they have got their way.
IF they still want to go ahead with the meeting, then they will need to come up with some argument to counter the appointment of these new guys.
If I am asked to choose between the two mining guys nominated, and the new appointments, then I choose retail and consumer experience over mining experience.