They will
a) Point to this as proof that the government is covering Elenin up, and/or
b) Point to this as proof that Elenin is actually an alien spacecraft that just went into stealth mode.
All of the other related blathering about subjects such as underground cities will continue unabated as well ("AboveTopSecret is reporting a backhoe was sighted in a field west of Denver International today. See!??!).
Facts regarding Elenin such as this will have as much impact on their theorizing as Elenin will have on Earth's orbit ("See! I told you! It's approaching from the south where we can't see it!").
Events completely unrelated to Elenin will be put forth as proof of Elenin's lethal approach ("Look! There was a 5.7 earthquake off Kamchatka today! See?!!?")
Then, when September comes and passes and October comes and passes, they will, without the least bit of self-examination of all of their past Elenin ruminations, jump into the 2012 Mayan end of the world blathering.
And when 2013 arrives, well, I'm sure there is something else baking in the grubby ovens of their fetid imaginations.
the grubby ovens of their fetid imaginations.
My imagination is not fetid, really it’s more turgid.
Oh noes! It even more dangerous now!!!!! ;)