Anytime before they added the 95 trial. Who cares about Glavoid? And even that takes some people weeks to finish, because they casually do it with a friend or two hunting NMs a few times a week, not farming KIs with an entire alliance to get it done in three days. But the real cock punch was doing that after they released a ridiculous trial knowing that people will spend massive amounts of money on it (and even if they didn't know before, they would after seeing for themselves).
Call it whatever you want, the amount hardly matters anyway. What matters is that people will feel betrayed by this. Why should they ever wanna invest in anything, knowing SE may gimp it at a whim? Was it a mistake of them to invest in it? You may say yes, but think about it... if this really was the best weapon, wouldn't that precisely be the reason why you'd invest in it? Or should we always wait a year to see if SE won't nerf it first, just to be safe?