Obamacare's Architect Admitted in 2012 That Only State Exchanges Get Subsidies

Last week on MSNBC's Hardball, Gruber said the absence of subsidies for the federal exchanges was the result of a typo.

Chris [Matthews], it is unambiguous this is a typo. Literally every single person involved in the crafting of this law has said that it’s a typo, that they had no intention of excluding the federal states. And why would they? Look, the law says that people are only subject to the mandate if they can afford insurance, if it’s less than 8 percent of their income. If you get rid of these subsidies, 99 percent of the people who would get subsidies can no longer afford insurance, so you destroy the mandate. Why would Congress set up the mandate and go through all that political battle to allow it to be destroyed? It’s just simply a typo, and it’s really criminal that this has even made it as far as it has.

If "literally every single person involved in crafting this law" thinks leaving out the federal exchanges was a "typo" and any other explanation is "stupid" and "screwy," according to Gruber, where does that leave  Gruber? How does the man we saw at Noblis, confidently assuring the audience that "if you're a state and you don’t set up an exchange, that means your citizens don't get their tax credits," explain his previous comment?