If you or the guy on the front line of this doesn't understand the difference between verbal language and written language, there is little point in continuing any discussion.
I'm not worried about anything you write, and I am confident I already know a reliable source on the IBT Constitution.
Here are a few pertinent areas...
Section 14
POWER AND DUTIES OF LOCAL UNION EXECUTIVE
BOARD
A. Except as may be otherwise provided in these By-Laws, the Local Union Executive Board is authorized and empowered to conduct and manage the affairs of this organization...
The Local Union Executive Board, in addition to such other general powers conferred by these By-Laws is hereby empowered to:
(1). Make and change rules and regulation not inconsistent with these By-Laws or the International Constitution for the management and conduct of the affairs of this Local Union;
(16). Do all acts not expressly authorized herein which are necessary or proper in implementation of the above duties for the protection of the property of the Local and for the benefit of the organization and members.
And finally,
Section 27
NEGOTIATIONS, RATIFICATION OF AGREEMENTS,
STRIKES AND LOCKOUTS
A. Whenever a collective bargaining agreement is about to be negotiated, modified or extended at the request of this Local Union, the principal officer shall determine and authorize the bargaining demands to be made.
These bylaws give the your E-Board and PO broad powers to conduct contract negotiations pretty much as they see fit. He/they are under no obligation to further any proposal if they feel it doesn't benefit the members. The only recourse the dissatified members then have is to vote the officers out. Since your current board was unchallenged in the most recent election, they most likely aren't too worried.
They may or may not entertain any proposal. What they can't ignore is the L177 Bylaws or the IBT Constitution, the written versions of each.
Are you related to Yogi Berra? If you're not the majority, there's no reason it should happen. Even if you are the majority, it's still your PO's call.