I've decided that gigavps will not get a scammer tag for this. Nefario has proven himself to be untrustworthy, so it would be unreasonable for gigavps to pay out large sums of money based entirely on Nefario's list. Requiring affidavits and proofs of identity are reasonable precautions. It's impossible to strictly follow the contract in a safe way.
Personally I believe the scammer tag is premature. If Giga listens to his bond holders he can still right the ship fairly easily, and there is reasonable evidence that we have the lists in the first place largely due to Giga. If he fails to make good on the original contract within a reasonable amount of time, then by all means, it's a scammer tag.
However... having a GLBSE owner/shareholder/nefario screwee making the determination seems like it could be an issue, no? No one is ever going to believe that you made the determination impartially.
Cheers.