Mike,
No, that doesn't work.
Here are some of the things I've already tried:
Decompressing with 7-Zip for Windows
Decompressing with gzip for Windows
Renaming to tohgr.exe and trying to execute
Renaming to tohgr.exe and trying to execute in DOSBox
Renaming to tohgr.tar.gz and trying to decompress as a tar archive
Renaming to tohgr.exe.zip and trying to decompress as a zip archive with both 7-Zip and Windows
Poking around in a hex editor to check for obvious issues
Scouring the Internet looking for a good copy, or the source so I can build it myself
I've also tested the other gz archives on the site and they do not appear to be corrupt.
I have emailed the author about this problem, so hopefully we will hear something soon.