Leave the snapshot as it it is will not hurt anything.Ok done!!! It's fantasticI don't need to delete snapshot, everything worked smoothly inside the BS system using only remount-sysvol.sh.
but I have a question, I just see under Disc Utility the name of snapshot is: com.apple.bless.05473884-872F-xxxx etc... it's normal that in the snapshot name it present word: BLESS? Leaving this as it is or do I need to do something else?