I agree with Heibai. A total clean reset is required to achieve a fair play.
Even if you check significant anomalies that reveal a clear abuse of the bug, I don't think you'll be able to observe those that haven't cheated that much and invested their little cash in armor or other items...
I'm not aware if this happened in NA strategus. If posible, I would not reset theirs but to make sure I would do it afterall.
1 week is not enough imo, who knows since when this has been discovered.