Snapshots in VMware products work like chains, so what's required is to recreate the correct chain, and link the configuration (.vmx) file to the newest snapshot. I've created the chain according to the delta files's time stamps.
So what you want to do is to unzip the attached .zip archive and upload the files to the appropriate datastores. Then either remove the VM from the ESXi host's inventory, and re-add it again, or reload the .vmx file from the command line (see https://kb.vmware.com/s/article/1026043).
To avoid modifications to the existing files, I'd recommend that you take another snapshot prior to powering on the VM.
Since you've powered on the VM from the flat.vmdk file, you may experience some data corruption, because some data blocks have been modified in this file.
Please note that I've named the descriptor .vmdk files to match the flat/delta file names. This means that you will need to delete your own created descriptor dnshole.vmdk file. CAUTION: Do NOT try to delete this file from the datastore browser. You'll have to delete it from the command line! Deleting a .vmdk file from the GUI may delete its associated flat/delta file too.
André