You have a fiduciary relationship with the paying customers of your service. One player cheated around $10,000+ (conservatively) into the economy. This devalued the value of every real world $ bought ce. Then you said no harm done as it was mostly all used on punch (this is completely asenine. This is a bold faced lie. This is a pathetic copout. This is a deception to your players as a cover your own a. Truly pathetic).

Is this even legal for you to allow the crowns to stay in the market since? It was you negligence in programming that ALLOWED this to happen.
People sold 100 ce for 10mil crowns. That is 117k ce at the rate the market was at prior to the glitch you allowed to be exploited (8500 per 100). That is over $250 (at the $50 package rate) return for 100 ce.

Is this legal? I highly doubt it is given the responsibilities of a company to those who are paying for your service.

A rollback is still needed. It seems like the right thing to do would be to do the right thing.

Anywho, off to study some legalities.