iSCSI target VHDX broken...

Here's a fun one. Was moving some VMs around for an infrastructure upgrade and I had them on an iSCSI drive presented by windows (vhdx). The server crashed because I pushed it too hard, and when it booted back up the vhdx is showing as 4MB in size.

I immediately powered down and took a full image of the drive in case it was possible to recover, but I expect this is unlikely. A forensic tool shows that there are 110 large files with an SWF extension on the drive. Are these the block data that was written to the vhdx before it crashed? Anything crazy I can do like change the end boundary of the vhdx on the disk?