If you suspect something is not legit then please just use the report button and let the staff handle it instead of trying to backseat moderate. Having a lot of games on Steam doesn't automatically make you a pirate. In fact, if you take a look at my profile you'll see that I have 521 games, and like xclavex most of them came from cheap sales.
Xclavex, I really don't know why you're having those kind of issues. The only other thing I can think of is that you may have some kind of mod compatibility conflict happening. Verifying integrity wouldn't touch modded files in the root of your install, so look there and try to delete all files with the following extension:
*.lua
*.xtbl
*.asm_pc
*.str2_pc
Then reinstall your test mod and try again.