Никто не может использовать проект после того, как он был удален, как описано ниже
This method immediately marks a project to be deleted and sends a notification email to the project owner. A project that is marked for deletion is not usable. If the project has a billing account associated with it, that association is broken, and will not be reinstated even if the project delete operation is immediately canceled. After approximately 30 days, the project will be fully deleted. To stop this process during the 30-day period, see the steps to restore a project.
Более подробную информацию можно найти здесь