While abhorrent, I have a sneaking suspicion this isn't as simple as the title and affidavit suggests. The FBI doesn't just randomly pick people to be informants. Their process is not the TV montage most people think of but a bureaucratic slog with a massive paper trail. If anything, it's likely to be some Kafkaesque mess instead of a spiteful plot to ruin this man's life, which is more concerning in some ways.