Desdichado
Hero
No doubt; the roots of the OSR easily stretch back to the founding of the Dragonsfoot forums and the excitement over Necromancer's intent to intentionally promote an "old school" feel in their products. At least. I don't really know what was going on online in D&Diana before the release of 3e, but I wouldn't be surprised if there wasn't a nascent OSR vibe there too.That fits my recollection of events as well, Ourph: the beginnings of the OSR were firmly in place before EGG's passing and well before 4e was announced.
But the roots of something and then that something itself are two different things. I don't think you can talk about the OSR itself until you get to the retroclones and the blog explosion. Otherwise, it's not the OSR, it's just some OS activity that eventually became the OSR.