recover file from destroyed zfs snapshot - is it possible?

[Greg Bonett]

Hi all,
I know this is a long shot, but I figure it's worth asking. Is there
anyway to recover a file from a zfs snapshot which was destroyed? I know
the name of the file and a unique string that should be in it. The zfs
pool is on geli devices so I can't dd the raw device and look for it.
Any suggestions?

Thanks for the help.

-Greg