Everything you say is speculation.  The Jewish Agency executive took decisions democratically and as far as I can remeber the decision to declare a state was taken by a vote. Ben-Gurion did not simply issue decrees. Too get ultr-orthodox support he agreed to make marriage and who-is-a-jew subject to rabbincial control. He also inserted a reference to divine sanction ("the rock of Israel") and made orthodx jews exempt from military service.  

 I will investigate and see what I can find on this issue but I think you will find that there was Jewish unity on the subject of a state.