Sorry to hear it! If the material is already widely held in EAST (more than 5 copies), then yes, you may remove the retention commitment. You can determine the level of retention in EAST by searching in OCLC or in Gold Rush (contact us at info@eastlibraries.org for a login). If it is not widely held in EAST, an attempt should be made to acquire the material. If that is not possible it should be added it to the semi annual reallocation process.