Snap restore is the process of reverting a volume to a specific snapshot, and is still available functionality, and that point in time snapshot does not include any future ones. You can also restore individual files from the snapshot using snap restore.
We also have options to let you spin up a temporary read/write copy based on a specific snapshot using flexclone (without doing a full copy) - that would let you see the volume and/or its LUNs as they were at that point in time. If you then decide you'd like to keep it, you can "split" the clone off as an independant volume.
Finally, if it's a CIFS share, you can access the copies of the file from snapshots using Windows previous version, or navigate into the snapshot folder and copy it out.