Without "C:\VM\Win7_Work\Windows 7 x64.vmdk", which is the base virtual disk you will most likely have issues with restoring the VM. However, due to the size of the current snapshot (~54GB) and the virtual disk having a provisioned size of 60GB, there's at least a good chance to recover most of the files. So if you cannot recover the missing base disk, let me know and we can try a few things without destroying the current state.
André