Revert back to SharePoint - VMware - Virtual machines

Hi

I have read the post; 'SharePoint farm Backup/Restore with VMware Snapshots'

http://social.msdn.microsoft.com/Forums/en-US/sharepointadminprevious/thread/e5abf633-9023-4f24-a707-2680cced28e8

And i am thinking,

Firstly an SQL server takes full backup once a day +sql transaction log every 2 hours.

To ensure onself of being safe, could it be possible to do the following:

1) Turn Off all SharePoint VM (2 Frontend webservers and 1 Application server)

2) Take snapshots of the VM's, then turn them on again.

3) Do the update/solution deployment.....

If SharePoint Farm fails (Disaster recovery), then do the following:

4) Turn off VM's. Restore SQL databases using the 'newest' SQL transaction log that was recorded before 'update/solution'.

5) Revert VM's to the snapshot taken in 2).

6) Turn on VM

When talking about the VMs I am only talkin about the 3 SharePoint VM's.

Will this work? Will there still be a sync. problem?

br

Bjorn