Persons of conscience are compelled to report wrongdoing when they discover it. Under such a policy, they do so at their own peril. I will probably see pigs fly before the present administration of our international union will intervene in such a case. For all we know, the order may have come from the top down. As for membership support, there are several planes on which one might proceed.
Local support is very important as the matter is squarely within the province of the local.
Local By Laws typically provide the Business Manager with the authority to hire and fire staff. However, the membership certainly has the right to propose a measure such as reinstatement at a membership meeting and the vote if sustained will serve as instructions to the Business Manager. If you don't have monthly meetings, research your By Laws and find out what is required for a special meeting at which, you may restrict the discussion solely to the matter for which the meeting was called. In addition, find out if your By Laws provide that meetings shall be conducted in accordance with Roberts Rules of Order. As for national or international support, news groups and discussion forums such as this serve as a call to action for all who support justice.