Using the Cmdlets : Deleting VPGs
  
Deleting VPGs
You can delete VPGs from a site via the following cmdlets:
Unprotect-Vpg – Deletes the VPG, leaving the virtual machines that comprised the VPG unprotected. This cmdlet is described in “Deleting a VPG”, below.
ForceRemove-ProtectionGroup – Deletes the VPG regardless of its state, for example when the Unprotect-Vpg cmdlet failed. This cmdlet is described in “Forcibly Deleting a VPG”, on page 18.
Deleting VPGs protecting virtual machines that are also protected in other VPGs, will not affect the virtual machines in the other VPGs.