Apparently they edited tags from 6 day old posts to get an early claim on the tokens. Some people are just out for themselves and should be cut from the system.
I wonder is there a list of the accounts that exploited the system. I'm sure that you and the steem-engine team will come up with a solution to redress the balance and cut out these people but it would be nice to know who the scum are going forward. It's accounts like these which have been holding STEEM back form moving forward as they try to cheat the community at every turn.