Proof? Yeah, there's a file there, it's encrypted, but it could be his laundry list for all we know...
Are you familiar with PGP, it's not exactly the easiest or fastest to crack. The best way to crack it would be a dictionary attack (as far as I recall) and anyone who uses a pass found in a dictionary is a freaking retard. Especially for a beta that isn't supposed to be released. So (and I could be wrong) we have the following:
1) It's the real loader but the pass ain't in a dictionary (good luck brute forcing)
2) It's not the real loader
3) It's the real loader, the pass is easy to guess
Playing the odds here, I'm going with the Not Option 3 choice (NO3).
As much as I'd like to have an even faster loader, it's not in our control, it's up to Wiigator.