Stuck merge in progress

this morning I shut down an exchange server, and it started merging the disks, the only problem is, it's not supposed to have a snapshot.

the current state is:

• The virtual machine is shut down
• the Hyper-V console says the machine Does Not Have Any Snapshots
• there IS a snapshot file in the machines's snapshot folder, last written at 8:02 this AM, now 3.5 hours ago
• the VM's vhd was last written at 8:02 AM as well
• the disks are merging ("merge in progress")
• there is no disk activity on either of the files, verfied with the resource monitor

I'm afraid to try anything right now because I don't want to damage the server.  Could someone please suggest a fix for this?

Thanks,

Ingram Barclay