What is driving the manager's decision? Are these people being assigned to a higher priority project? Without understanding the context behind the decision, it would be hard to provide helpful guidance. Depending on the context, you might be able to influence a change to the decision, escalate the situation to someone who can influence the decision or accept it and treat it as a project change.
Kiron Saving Changes...
Sergio Luis ConteHelping to create solutions for everyone| Worldwide based OrganizationsBuenos Aires, Argentina
Simple: you do not own the project. Project owner are those that agree on starting a project becuase they need to create a product/service/result to achieve a business goal. So, go to the project owner and tell him about the scenarios that will happend due to the situation. Saving Changes...