That was just something on the wiki, never ever confirmed by the developers.
Yeah. And given how OWB.esm has no dependency on DM.esm, it's quite impossible from a game engine standpoint too.
Besides, Klein said you wouldn't be able to talk about the Big Empty with anyone due to something they did to your brain, since they didn't want you blabbing about things like Elijah, Ulysses, and Christine did.