Starting from Veritas System Recovery 18, the backup set from Symantec System Recovery 2013 (All Service Packs) are no longer supported for restores as mentioned in the Software Compatibility List of the same - https://www.veritas.com/content/support...
The "Offline State" means, the VM will be "Suspended" till the snapshot processing of the VM is done. Once the snapshot is done, the Virtual Machine will be brought "Online".
I suggest you get a technical support case created for this issue so that it can handled in a better way. This requires removal of inactive SQL Instance using the GUID.
