Short Answer: NO
Longer Answer: Its a computer. Nothing is impossible. The term "impossible" is just computer tech jargon meaning "yeah we can but its probably more trouble than its worth".
There is code to READ a .2h file written in C. People have wisely avoided experimentation with editing it (or at least posting about it). We have had one person accused of cheating by editing files and he is shunned from the community.
All I can advise is making backups before each turn. There are examples and code available for that. If you are a windows user then maybe the desktop shortcut of mine would help for avoiding this in the future.
Its in the "Utilities" section of my site
http://www.Dom3Minions.com