Let’s try to walk through this particular sequence of events; it isn’t pretty. EverQuest puts a new patch update on the test servers with some minor but important shifts to how the game plays. That’s a good thing, naturally. Then someone takes a peek at the in-game cash shop and notices that the items there are… cheap. Too cheap. In the realm of 10 SC cheap. And not just items for EverQuest, either.
What happens next becomes fuzzy because the forums have since been purged with fire to remove any references to what took place, but some players took those unbelievable discounts as a sign that it was time to spend spend spend and wound up banned, and threads discussing what happened were subsequently locked and pruned. That makes the whole issue a bit of a he-said-she-said, but makes an already shady situation seem a bit shadier.
[Source: Official forums; thanks to Haldar for the tip!]