Thank you for your replies. As I said it is a complicated issue and there is no clear cut avenue for the Board to unilaterally change Articles and especially bylaws. It refers back to statutes that, in plain language-not to be confused with how it is legally interpreted, says, members of non stock companies are the same as stockholders in stock companies. Statutes also describe stockholders as voting on amendments to AOI. That is all stuff that will have to be worked out in court, if it goes there.
I was more wondering about the conduct during the process, where 40% of the Board of Directors were kept completely in the dark about the formation, preparation, and presentation of AOI amendments until the meeting upon which they were voted upon. On the surface it appears if there were some clandestine, "semi" board meeting for all the article amendments to be worked out ahead of the meeting.