This is a step in the right direction. Something that will help to raise the preceived legitimacy of the Emu team.
The community needs to see that finding exploits is required but using them will not be tolerated.
I do have to question if the punishment for those involved was of sufficient severity.
As has been said before, those who exploit like this will undoubtedly have broken the single account rule already.
And, for many involved, this won't be their first ban for exploiting.