TOSave2K11 is a simple utility which fixes my player saves which are broken due to using "Save and Exit" during a timeout.
I tested it on a few PC saves and I was able to restore them successfully. If 2K does not change file format across platforms, it should also work
for other platforms (Xbox, PS etc.) but I am not 100% sure about that. Let me know if you can test these cases.

It is pretty easy to use. Just browse to your broken my player file (which has .CMG extension) and click "Fix It". Tool does not modify your original file. Instead, it creates a new .CMG file. Still, I added a "Save Backup File" option.
Download it here.
If you are interested, you can find the source code here.
Feel free to inform me if you encounter any kind of problems.
Hope it helps, have fun.