alinka – as your Chairman previously ruled the original Motion out-of-order on the grounds that you describe in your post, and it would appear that the Motion to be put at the Extraordinary General Meeting (EGM) will be non-compliant with the Act on those same grounds (i.e. no evidence and incorrectly put), then it too should be ruled out-of-order; shouldn’t it?
Your Strata Manager is amongst other things engaged to ensure that the Owners Corporation acts strictly in accordance with the Law and not to just be a pawn to the Executive Committee, although perhaps that’s why they’re not going to attend the EGM.
My advice is to again seek to have the Motion ruled out-of-order on the same grounds as it was on the first occasion, and to advise the Chairman in advance of the Meeting that you and like-minded Owners will be seeking Orders under Sect 153 to have any resolution that may be made in favour of the proposal invalidated on the grounds that a vote in compliance with the Act (i.e. as a special resolution) would have resulted in that proposal being defeated.