Help in recovering a VM?

I had a raid-1 SSD datastore, that recently dropped a drive, that was hosting 6 or 7 vm's. Was able to move all vm's off the remaining drive, except 1. That VM still runs ok (it's an email gateway/spam filter), but there is corruption in the vmfs datastore somewhere where the vmdk files are. I can start and stop the vm, it does everything it needs to do in a normal fashion (some I'm guessing the corruption is in some never accessed part of the server), I just can't back it up or copy/move it to another datastore. Tried doing CP and DD by hand in the vsphere ssh console etc, always errors out.

So is there some method to mount the datastore where I can do a DD to another store and skip the corrupted sectors?