Well, it sounds to me as if we have a real problem here...
This morning (in fact, during JP prime time), the game had to be shut down for an emergency All-Worlds Maintenance for two hours -- and, for three servers, three hours!
After the Maintenance, we found out that the use of the Porta-Furnace (the portable Synergy furnace) has been discontinued until further notice, and there was discussion on BluGartr as to whether this had anything to do with Japanese linkshells being able to pop the VNM Wyrm at the top of the VNM tree and gain so many drops from it.
It turns out, according to Fusionx, that might well be the case!
Apparently, players using a Porta-furnace just before entering a Cavernous Maw (unclear as to whether this was true in both directions) could receive the immediate pop key item for the VNM top-level Wyrm!
Ban the fucking lot of them if this is true. ANY use of a Black Abyssite for this purpose should ban, at minimum, the popper, if not all characters who gained items with any degree of knowledge.
This most certainly compares to the Salvage bans.